A magazine picture of a purse is shown below. How much area does the purse (not including the handle) take up in the magazine layout?
Answers
The area of the purse can be calculated using the formula for the area of a trapezoid. The purse (not including the handle) takes up 34 cm² in the magazine layout.
What is the formula of area of a trapezoid?The formula states that the area of a trapezoid is equal to one half of the product of the length of the two parallel sides, multiplied by the height. Thus, the area of the purse can be calculated as:
Area = (1/2) x (11cm + 6cm) x 4cm
Area = (1/2) x (17cm) x 4cm
Area = 34 cm²
Therefore, the purse (not including the handle) takes up 34 cm² in the magazine layout.
It is important to note that the formula for the area of a trapezoid can be used in this instance because the purse has a shape of a trapezoid.
This is due to the fact that the line parallel to the 11cm base has a length of 6cm. The line is not parallel to the 4cm height and thus, the shape of the purse is a trapezoid and not a rectangle.
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Related Questions
A swimmer dives into a lake and swims to the surface in a parabolic path. path of the swimmer can be modeled by the equation
h (t) = t - 4t-where h is the height in
feet, and t is the time in seconds.
Complete the statement.
The diver will reach the surface of the water
after seconds.
Answers
Answer:
the diver will reach the surface of the water after 1/4 seconds.
Step-by-step explanation:
To find when the swimmer reaches the surface of the water, we need to set h(t) to zero since the surface of the water is at a height of zero feet.
0 = t - 4t^2
Simplifying the equation, we get:
4t^2 = t
4t^2 - t = 0
t(4t - 1) = 0
So, either t = 0 (which corresponds to the initial time when the swimmer is at the surface) or 4t - 1 = 0. Solving for t, we get:
4t - 1 = 0
4t = 1
t = 1/4
Therefore, the diver will reach the surface of the water after 1/4 seconds.
I need help with this practice. Assistance would be greatly appreciated.
Jane is training for a triathlon. After swimming a few laps, she leaves the health club and bikes 16 miles south. She then runs 12 miles west. Her trainer bikes from the health club to meet Jane at the end of her run.
How much farther does Jane travel than her trainer? Answer the questions to find out.
1. What is the total distance Jane travels biking and running? Include units with your answer. (2 points)
2. Use the Pythagorean theorem to write an equation for the distance Jane's trainer bikes. (2 points)
3. Solve your equation to find the distance Jane's trainer bikes. Show your work. (3 points)
4. How much farther does Jane travel than her trainer? (3 points)
Answers
Answer:
1 The total distance Jane travels biking and running is the hypotenuse of a right triangle with legs 16 miles and 12 miles. Using the Pythagorean theorem, we can find this distance:
distance = sqrt(16^2 + 12^2) = sqrt(256 + 144) = sqrt(400) = 20 miles
So Jane travels a total of 20 miles.
2 The distance Jane's trainer bikes is the distance from the health club to the point where he meets Jane. Let's call this distance x. We can represent this with the following right triangle:
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Copy code
A (health club)
|
|
| x
|
|
B (meeting point)
where A and B are points on a coordinate plane, and the x-axis represents the direction Jane runs.
Using the Pythagorean theorem, we can write:
x^2 + 12^2 = d^2
where d is the distance from the health club to the end of Jane's run. We know that d = 20, so we can substitute:
x^2 + 12^2 = 20^2
3. Solving for x:
x^2 + 144 = 400
x^2 = 256
x = sqrt(256) = 16
So Jane's trainer bikes 16 miles.
4 Jane travels 20 - 16 = 4 miles farther than her trainer.
Step-by-step explanation:
PLS HELP!!! DUE TOMORROW!!! I need a paragraph!! Pls and thank you!! edit: I accidentally put it as math it's history!
A common theme found in European history during this time frame is that countries in power were always pretty confident that they were justified in their thinking, beliefs and actions. Point out some ways in which they were very wrong (even though they thought otherwise).
Answers
Despite their confidence in their thinking, beliefs, and actions, European countries in power during this time frame were often wrong in their assumptions about the superiority of their culture and the legitimacy of their actions towards other nations and peoples.
Why were the European very wrong with their thought?European countries in power during this time frame, particularly in the 19th and early 20th centuries, believed in the concept of imperialism and the "civilizing mission" of spreading their culture and values to other parts of the world. This often led to the exploitation and oppression of colonized peoples, as well as the imposition of Western values on non-Western cultures.
However, these assumptions about the superiority of Western culture were flawed and based on a Eurocentric view of the world. Additionally, many European powers engaged in brutal and violent actions, such as the forced removal of Indigenous peoples from their lands, the use of slavery and forced labor, and the exploitation of natural resources.
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A company that teaches self-improvement seminars is holding one of its seminars in Wildgrove. The company pays a flat fee of $164 to rent a facility in which to hold each session. Additionally, for every attendee who registers, the company must spend $8 to purchase books and supplies. Each attendee will pay $49 for the seminar. Once a certain number of attendee register, the company will be breaking even. How many attendees will that take? What will be the company's total expenses and revenues?
Answers
The company's total expenses and revenues will both be $196 when 4 attendees register.
What is Algebraic expression ?
In mathematics, an algebraic expression is a combination of variables, constants, and mathematical operations, such as addition, subtraction, multiplication, and division, that represents a quantity or a relationship between quantities.
Let's assume that the company's goal is to break even, which means that their total revenue should be equal to their total expenses.
Let's represent the number of attendees by "x." For the company to break even, the total revenue earned from x attendees must be equal to the total expenses incurred.
Total Expenses = Fixed Cost + Variable Cost
Fixed cost = Facility rent fee = $164
Variable cost = Books and supplies per attendee = $8
Total Expenses = $164 + $8x
Total Revenue = Price per attendee x Number of attendees = $49x
To find the break-even point, we set the total revenue equal to the total expenses and solve for x:
$49x = $164 + $8x
$41x = $164
x = 4
Therefore, the company needs to have 4 attendees to break even.
To calculate the total expenses and revenues, we can substitute x = 4 into the equations we derived above:
Total Expenses = $164 + $8(4) = $196
Total Revenue = $49(4) = $196
Therefore, the company's total expenses and revenues will both be $196 when 4 attendees register.
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Suppose that the distribution of scores of 1,000 students who take a standardized intelligence test is a normal distribution. Also, suppose that the distribution's mean is 470 and its standard deviation is 10.
Answers
This information can be used to understand the performance of the students and Evaluate their scores in relation to the overall group.
Suppose that the distribution of scores of 1,000 students who take a standardized intelligence test is a normal distribution. In this scenario, the distribution's mean is 470 and its standard deviation is 10.
A normal distribution, also known as a Gaussian distribution or bell curve, is a symmetric distribution where the majority of the data falls around the mean value. In this case, the mean score is 470, which represents the average intelligence score for the 1,000 students. The standard deviation, which is 10 in this case, measures the dispersion or spread of the data around the mean.
To interpret the scores, we can use the empirical rule, which states that approximately 68% of the data falls within one standard deviation of the mean, 95% within two standard deviations, and 99.7% within three standard deviations.
Applying this rule:
- About 68% of the students scored between 460 (470-10) and 480 (470+10).
- Approximately 95% of the students scored between 450 (470-2*10) and 490 (470+2*10).
- Around 99.7% of the students scored between 440 (470-3*10) and 500 (470+3*10).
This information can be used to understand the performance of the students and evaluate their scores in relation to the overall group.
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complete the square to determine all solutions for x^2-4x=2
Answers
Answer: To complete the square, we need to add and subtract the square of half the coefficient of x:
x^2 - 4x = 2
x^2 - 4x + 4 = 2 + 4 (adding and subtracting 4)
(x - 2)^2 = 6
Now we take the square root of both sides:
x - 2 = ±√6
Adding 2 to both sides gives:
x = 2 ± √6
So the solutions are:
x = 2 + √6, 2 - √6
Step-by-step explanation:
one paycheck is $250 less than another. The sum of the two checks is &1628. how much is each check written for.?
Answers
Answer: $939 and $689
Step-by-step explanation:
We can create a system of equations to help us solve. Let x be one and y be the other paycheck.
y = x - $250
y + x = $1,628
Next, we can solve the system of equations by graphing. The point of intersection is our solution. See attached. This gives us (939, 689), so one check was written for $939 and one was written for $689.
use double angle identity to simplify the following expression
tan 12 degrees/1-tan^2 12 degrees
Answers
Answer: We can use the double angle identity for tangent, which states that:
tan(2θ) = 2tan(θ) / (1 - tan²(θ))
to simplify the expression.
Let θ = 6 degrees, then we have:
tan(2θ) = tan(12 degrees)
tan(2θ) = 2tan(θ) / (1 - tan²(θ))
tan(12 degrees) = 2tan(6 degrees) / (1 - tan²(6 degrees))
We can use the tangent half-angle identity to find tan(6 degrees), which states that:
tan(θ/2) = sin(θ) / (1 + cos(θ))
Letting θ = 12 degrees, we get:
tan(6 degrees) = sin(12 degrees) / (1 + cos(12 degrees))
We can then use the double angle identity for sine, which states that:
sin(2θ) = 2sin(θ)cos(θ)
to simplify sin(12 degrees). Letting θ = 6 degrees, we get:
sin(12 degrees) = 2sin(6 degrees)cos(6 degrees)
We can use the half-angle identity for cosine to find cos(6 degrees), which states that:
cos(θ/2) = √((1 + cos(θ)) / 2)
Letting θ = 12 degrees, we get:
cos(6 degrees) = √((1 + cos(12 degrees)) / 2)
Substituting these values into the original expression, we get:
tan(12 degrees) = 2tan(6 degrees) / (1 - tan²(6 degrees))
tan(12 degrees) = 2(sin(12 degrees) / (1 + cos(12 degrees))) / (1 - (sin²(12 degrees) / (1 + cos(12 degrees))²))
tan(12 degrees) = 2(2sin(6 degrees)cos(6 degrees) / (1 + cos(12 degrees))) / (1 - (4sin²(6 degrees)cos²(6 degrees) / (1 + cos(12 degrees))²))
tan(12 degrees) = (4sin(6 degrees)cos(6 degrees)) / (1 + cos(12 degrees) - 4sin²(6 degrees)cos²(6 degrees))
This is the simplified expression using the double angle identity.
Step-by-step explanation:
Please answer this somebody that’s good at math I have been posting this and nobody answered:(
Answers
Answer: 30 inches
Step-by-step explanation:
Length x Width x Height
Your length is 2, your height is 3 and your width is 5. So this means 2x3x5.
2 times 5 equals 10. 10 times 3 equals 30. Your answer is 30! Hope this helps you!
Use a cofunction to write an expression equal to
Answers
The required expression equal to [tex]$\csc\left(\frac{4\pi}{9}\right)$[/tex] using a cofunction is: [tex]\begin{equation}\frac{1}{\cos\left(\frac{5\pi}{18}\right)}\end{equation}[/tex]
How to deal with trigonometric equation?Trigonometry is the study of angles and the angular relationships between planar and three-dimensional figures. The cosecant, cosine, cotangent, secant, sine, and tangent are the trigonometric functions—also known as the circular functions—that make up trigonometry.
According to question:The cofunction of sine is cosine, which means:
[tex]$\begin{equation}\csc(\theta) = \frac{1}{\sin(\theta)} = \frac{1}{\cos\left(\frac{\pi}{2}-\theta\right)}\end{equation}[/tex]
Therefore, we can express [tex]$\csc\left(\frac{4\pi}{9}\right)$[/tex] as:
[tex]$\begin{equation}\csc\left(\frac{4\pi}{9}\right) = \frac{1}{\sin\left(\frac{4\pi}{9}\right)} = \frac{1}{\cos\left(\frac{\pi}{2}-\frac{4\pi}{9}\right)}\end{equation}[/tex]
Simplifying the argument of the cosine function:
[tex]$\begin{equation}\frac{\pi}{2}-\frac{4\pi}{9} = \frac{5\pi}{18}\end{equation}[/tex]
Substituting this back into the equation, we get:
[tex]$\begin{equation}\csc\left(\frac{4\pi}{9}\right) = \frac{1}{\cos\left(\frac{5\pi}{18}\right)}\end{equation}[/tex]
Therefore, an expression equal to [tex]$\csc\left(\frac{4\pi}{9}\right)$[/tex] using a cofunction is:
[tex]\begin{equation}\frac{1}{\cos\left(\frac{5\pi}{18}\right)}\end{equation}[/tex]
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The equation y32.92-572.87 can be used to model the relationship between sales at a local ice cream shop, y, in dollars, and the outside temperature, z, in degrees Fahrenheit (F)
Complete the statements
When the outside temperature is 30°F, the sales are estimated to be
When the outside temperature is [DROP DOWN 21, the sales are estimated to be $1,993.33
Answers
When the outside temperature is 30°F, the sales are estimated to be $414.73.
The outside temperature is approximately 78.03°F, the sales are estimated to be $1,993.33.
Define temperatureIt refers to a physical property of matter that reflects how hot or cold an object is relative to other objects or a standard scale. Temperature is typically measured in units such as Celsius (°C), Fahrenheit (°F), or Kelvin (K).
When the outside temperature is 30°F, the sales are estimated to be:
y = 32.92(30) - 572.87
y = 987.60 - 572.87
y = $414.73
Therefore, when the outside temperature is 30°F, the sales are estimated to be $414.73.
When the outside temperature is x, the sales are estimated to be $1,993.33, we can solve for x as follows:
1,993.33 = 32.92x - 572.87
2,566.20 = 32.92x
x ≈ 78.03°F
Therefore, when the outside temperature is approximately 78.03°F, the sales are estimated to be $1,993.33.
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Which three questions are statistical questions?
A
B
C
D
E
How many hours of sleep per night do students usually get when they have school the next day?
What is the minimum height requirement for a rollercoaster?
What are the heart rates of the students in Mr. Peterson's physical education class?
How many letters are in the last names of the students in my 6th grade class?
How many runs did the New York Yankees score in their last game?
Answers
The three statistical questions are: A. How many hours of sleep per night do students usually get when they have school the next day? B and E.
What is a statistical question?A statistical question is one that may be resolved via the collection and examination of data. The question frequently incorporates a variable that might differ from person to person or scenario to situation, and the solution is not always the same. The words "how many," "what is the average," "what is the range," "what is the distribution," etc. are frequently used in statistical queries.
The three statistical questions are:
How many hours of sleep per night do students usually get when they have school the next day?
What are the heart rates of the students in Mr. Peterson's physical education class?
How many runs did the New York Yankees score in their last game?
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What is the diameter of a hemisphere with a volume of 62617 cm³, to the nearest tenth of a centimeter?
Answers
The diameter of the hemisphere to the nearest tenth of a centimeter is 62.1 cm.
What is hemisphere?
A hemisphere is a three-dimensional geometric shape that consists of a half-sphere, which is a curved surface that is shaped like the surface of a ball, and a flat circular base that lies on a plane perpendicular to the sphere's axis of symmetry. A hemisphere can be thought of as the three-dimensional analogue of a circle.
The volume of a hemisphere is given by the formula:
V = (2/3)π[tex]r^3[/tex]
where V is the volume and r is the radius of the hemisphere.
We are given the volume of the hemisphere as 62617 [tex]cm^3.[/tex]
So, we have:
62617 = (2/3)π[tex]r^3[/tex]
Multiplying both sides by 3/2π, we get:
[tex]r^3[/tex] = 62617 * (3/2π)
Simplifying, we get:
[tex]r^3[/tex] = 29897.4152
Taking the cube root of both sides, we get:
r ≈ 31.04
The diameter of the hemisphere is twice the radius, so:
d = 2r ≈ 62.08
Rounding to the nearest tenth, we get:
d ≈ 62.1
Therefore, the diameter of the hemisphere to the nearest tenth of a centimeter is 62.1 cm.
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the diameter of each tire on a vehicle is 32 inches. if the tires are moving at a rate of 800 revolutions per minute, find the linear speed of the vehicle in miles per hour.
Answers
Answer:
The linear speed of the vehicle is approximately 0.798 miles per hour.
Step-by-step explanation:
The circumference of a tire is given by the formula C = πd, where d is the diameter of the tire. So, the circumference of each tire is:
C = πd = π(32 inches) ≈ 100.53 inches
Now, to find the distance that the vehicle travels in one revolution of each tire, we use the circumference formula again:
distance traveled in one revolution = circumference of the tire = 100.53 inches
Since the tires are rotating at a rate of 800 revolutions per minute, the vehicle travels a distance of:
distance traveled in one minute = distance traveled in one revolution × number of revolutions per minute
= 100.53 inches/revolution × 800 revolutions/minute
= 80424 inches/minute
To convert this to miles per hour, we need to divide by the number of inches per mile and the number of minutes per hour:
speed = (80424 inches/minute) × (1 mile/63360 inches) × (60 minutes/1 hour)
≈ 0.798 miles/hour
Therefore, the linear speed of the vehicle is approximately 0.798 miles per hour.
if correct brainest! look at picture
Answers
Answer:
x = 47
Step-by-step explanation:
All angles in a triangle ALWAYS add up to 180 degrees, so to find a missing angle, subtract what is already given. It will be 180 - (102+31), which is the same as 180-133 which equals 47. The basic rule is to subtract given angels from 180 to find the missing side.
Select the correct answer. Which expression is equivalent to the given expression? 4 in x + in 3 - in x
Answers
Answer:
The expression 4 in x + in 3 - in x can be simplified using logarithmic rules: 4 in x + in 3 - in x = in x^4 + in 3 - in x = in (x^4 * 3 / x) = in (3x^3) Therefore, the expression is equivalent to in (3x^3).
Write the expression in terms of sine and cosine, and simplify so that no quotients appear in the final expression.
tan θ / sec θ
Answers
tan θ / sec θ = sin θ
Step-by-step explanation:
We know that secant is the reciprocal of cosine. Therefore, we can write:
sec θ = 1/cos θ
Substituting this in the given expression, we get:
tan θ / sec θ = tan θ / (1/cos θ)
Multiplying by cos θ/cos θ to simplify the expression, we get:
tan θ / sec θ = (tan θ cos θ) / 1
We know that the tangent of an angle is equal to the sine of the angle divided by the cosine of the angle. Therefore:
tan θ = sin θ / cos θ
Substituting this in the expression above, we get:
tan θ / sec θ = (sin θ / cos θ) cos θ
Simplifying the expression further, we get:
tan θ / sec θ = sin θ
Therefore, the expression in terms of sine and cosine, simplified so that no quotients appear in the final expression, is:
tan θ / sec θ = sin θ
Allison uses 3
inches of fabric to make a bookmark. She buys 412
feet of fabric.
How many bookmarks can Allison make with 412
feet of fabric?
Answers
Allison can make 1648 bookmarks with 412 feet of fabric.
First of all, the total length of fabric, and the length of each bookmark have different units.
Therefore, we convert fabric length into inches.
∵ 1 foot = 12 inches
∴ 412 feet = 412 × 12 inches
= 4944 inches.
Now,
length of each bookmark = 3 inches (given)
Total length of fabric in inches = 4944 inches
∴ Total number of bookmarks = 4944 ÷ 3
= 1648
Hence we find that the total number of bookmarks that Allison can make from 412 feet of fabric is 1648.
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Alexander built a toy box in the shape of a rectangular prism with an open top. The diagram below shows the toy box and the net of the toy box. NET OF TOY BOX is 14 cm 10 cm 9 cm What is the surface area, in square centimeters, of the toy box?
Answers
The surface area of the toy box is 712 square centimeters.
Describe Surface Area?Surface area is the measure of the total area that the surface of an object occupies. In other words, it is the sum of the areas of all the faces or surfaces of the object.
For example, consider a rectangular prism with dimensions length (l), width (w), and height (h). The surface area of this object would be the sum of the areas of all six faces, which are:
Two rectangular faces with area lw
Two rectangular faces with area wh
Two rectangular faces with area lh
So the total surface area of the rectangular prism would be:
Surface area = 2lw + 2wh + 2lh
The concept of surface area is useful in various fields, such as architecture, engineering, and physics. For example, in construction, knowing the surface area of a structure can help estimate the amount of materials needed for construction, such as paint or roofing tiles. In physics, surface area is important in determining the heat transfer and rate of reaction of a substance.
The surface area of the toy box can be found by summing the areas of its six faces. From the given net, we can see that the toy box has dimensions of 14 cm by 10 cm by 9 cm.
The top and bottom faces have areas of 14 cm × 10 cm = 140 cm² each.
The front and back faces have areas of 14 cm × 9 cm = 126 cm² each.
The left and right faces have areas of 10 cm × 9 cm = 90 cm² each.
Therefore, the total surface area is:
2(140 cm²) + 2(126 cm²) + 2(90 cm²) = 280 cm² + 252 cm² + 180 cm² = 712 cm²
Thus, the surface area of the toy box is 712 square centimeters.
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Need to find x using the Pythagorean Theorem
Answers
Answer:
1. 15
2. 26
3. ≈ 7.62
4. 8
5. ≈ 23.24
6. √2
7. ≈ 19.42
8. 18
9. x≈10.29 y≈5.83
Step-by-step explanation:
Use a²+b²=c² throughout the problems and plug in the given sides and hypothenuse.
1. 9²+12²=c²
81+144=225
√225 = 15
2. 10²+24²=c²
100+576=676
√676=26
3. 7²+3²=c²
49+9=58
√58 ≈ 7.62
4. a²+6²=10²
a²+36=100
a²=64
x=8
5. a²+6²=24²
a²+36=576
a²=540
x≈ 23.24
6. 1²+1²=c²
1+1=2
x=√2
7. a²+8²=21²
a²+64=441
a²=377
x≈ 19.42
8. a²+24²=30²
a²+576=900
a²=324
x=18
9. for x:
9²+5²=x²
81+25=106
√106 ≈10.29
x ≈10.29
for y:
5²+3²=y²
25+9=34
√34 ≈5.83
y ≈5.83
boom shakalaka
2. Graph y = x² - 4x + 5 using the critical points (y-intercept, x-intercept, vertex).
Answers
Answer:
VERTEX: (8,1)
GRAPH BY DESMOS IS ATTACHED TO THIS POST
Y-INTERCEPT: (5,0)
X-INTERCEPT: NONE
Step-by-step explanation:
To find the vertex, we usually use the formula -b/2a to find the x-vertex. So, the x-vertex would be:
-(-4)/2
4/2
2
The y-vertex can be found by substituting the x-vertex back into the equation. So:
y=(2)² -4(2) + 5
y= 4-8+5
y= -4 + 5
y= 1
So, we found that our vertex is (8,1)
Because we see that our "a" value from our quadratic equation is positive, this tells us that the graph opens upwards. We know our vertex is higher than our x-axis line, so there will be no x-intercepts.
The y-intercept is found when the x-value equals to 0. So, inserting this into the equation, we get :
y=(0)² - 0 +5
y= 5
So, we have found our y-intercept as (0, 5)
The graph you could've made would've been using the vertex and the y-intercept and connecting those points for one side of the quadratic graph. The other side would require an integer point for more accuracies, and I believe that the point (3,2) also works.
So, using the points (3,2), (0,5), and (8,1), we can make a graph!
I hope this helped :P
A rectangular paperboard measuring 20in long and 12in wide has a semicircle cut out of it, as shown below. What is the perimeter of the paperboard that remains after the semicircle is removed? (Use the value 3.14 for pi , and do not round your answer. Be sure to include the correct unit in your answer.)
Answers
A semicircle has been cut out of a rectangular paperboard that is 20 inches long and 12 inches broad, as seen below. After the semicircle is taken out, the paperboard's remaining perimeter is 34.58 inches.
The paperboard has a length of 20 inches and a width of 12 inches. A semicircle is cut out of it, which means we need to find the perimeter of the remaining part.
The diameter of the semicircle is equal to the width of the paperboard, which is 12 inches. So, the radius of the semicircle is half of the diameter, which is 6 inches.
The perimeter of the remaining part will be the sum of the length of the paperboard and the two straight sides of the semicircle.
The length of the paperboard is 20 inches, and the two straight sides of the semicircle are equal to the diameter of the semicircle, which is 12 inches. So, the perimeter of the remaining part is:
P = 20 + 12 + 12 = 44 inches
However, we also need to subtract the length of the curved part of the semicircle from the perimeter. The length of the semicircle can be found using the formula:
C = πr
where C is the circumference of the semicircle and r is the radius.
Since we have a semicircle, we need to divide the circumference by 2. So, the length of the curved part of the semicircle is:
C/2 = (π x 6) / 2 = 9.42 inches (rounded to two decimal places)
Therefore, the perimeter of the remaining part is:
P = 44 - 9.42 = 34.58 inches (rounded to two decimal places)
So, the perimeter of the remaining paperboard is 34.58 inches.
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help real quick! brainliest to the correct answer
Answers
Answer:
[A] Multiply the bottom equation by -3/2, then add the equations.
[C] Multiply the top equation by -3, then add the equations.
Step-by-step explanation:
You want to know a suitable "elimination" strategy for the two equations ...
2x -6y = 66x -4y = 2EliminationThe result of an elimination strategy is that one of the variables in the combined equations has a coefficient of 0. If we add the equations as a final step, the coefficients must be opposites for that to happen.
RatiosThe ratios of variable coefficients in the top equation to those in the bottom equation are ...
x: 2/6 = 1/3y: -6/-4 = 3/2A suitable elimination strategy will multiply one of the equations by a value that makes this ratio -1. Let's look at the choices.
A. Bottom by -3/2Multiplying the bottom equation by -3/2 makes the ratio of x-coefficients be ...
[tex]\dfrac{1}{3}\times\dfrac{1}{\left(-\dfrac{3}{2}}\right)}=-\dfrac{2}{9}\ne -1[/tex]
Multiplying the bottom equation by -3/2 makes the ratio of y-coefficients be ...
[tex]\dfrac{3}{2}\times\dfrac{1}{\left(-\dfrac{3}{2}\right)}=-\dfrac{6}{6}=-1[/tex]
This is a suitable strategy for eliminating the y-variable.
B. Bottom by 3, then subtract itThis strategy is equivalent to multiplying the bottom equation by -3, then adding. This will make the x-coefficient ratio be ...
[tex]\dfrac{1}{3}\times\dfrac{1}{\left(-3}\right)}=-\dfrac{1}{9}\ne -1[/tex]
Multiplying the bottom equation by -3 makes the ratio of y-coefficients be ...
[tex]\dfrac{3}{2}\times\dfrac{1}{-3}=-\dfrac{3}{6}\ne-1[/tex]
Not a suitable strategy for elimination.
C. Top by -3Multiplying the top equation by -3 makes the ratio of x-coefficients be ...
[tex]\dfrac{1}{3}\times\dfrac{-3}{1}}=-\dfrac{3}{3}= -1[/tex]
This is a suitable strategy for eliminating the x-variable.
Choices A and C are suitable strategies for eliminating a variable.
Find the slope of a line perpendicular to the line whose equation is 5x + 6y = - 18.
Fully simplify your answer.
Answers
Answer:
m = [tex]\frac{6}{5}[/tex]
Step-by-step explanation:
First, we must rewrite 5x + 6y = - 18 to the form y = mx + b.
5x + 6y = -18
6y = -5x - 18
y = [tex]\frac{-5}{ 6}[/tex]x - 3
The equation of a perpendicular line to y = [tex]\frac{-5}{ 6}[/tex]x - 3 must have a slope that is the negative reciprocal of the original slope.
So, the slope of the perpendicular line is
m = [tex]\frac{6}{5}[/tex]
Answer: 6/5
Step-by-step explanation:
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What’s 890 / 5621 /56 +8987 x 67 - square root
Answers
The simplified expression is: √602755 = 776.372977
What do you mean by term Square root ?
The square root of a number is a value that, when multiplied by itself, gives the original number. It is denoted by the symbol √, which is called the radical symbol. For example, the square root of 16 is 4 because 4 multiplied by 4 equals 16. The square root of a non-negative number is always a non-negative number.
Assuming
(890 / 5621) / 56 + 8987 x 67 - sqrt(x)
where x is some unknown value, we can simplify the expression as follows:
First, we can simplify the division:
(890 / 5621) / 56 = 0.000281
Then we can substitute this value into the expression and simplify the multiplication:
0.000281 + 8987 x 67 - sqrt(x) = 602755 - sqrt(x)
At this point, we cannot simplify the square root further without knowing the value of x.
Therefore, the simplified expression is:
√602755 - 776.372977
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URGENT NEED HELP PLEASE ♥️
Can someone give me the answer and explain how they solved it
log 2 + 1
Answers
Answer:
(i) log 1 base 2 = log_{2} 1 =1.30103
Step-by-step explanation:
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Solve for x. Please due soon
Answers
The value of x for measure a base angle for the isosceles trapezoid is equal to 25°.
What is an Isosceles trapezoidThis is a trapezoid in which the base angles are equal and therefore the left and right side lengths are also equal. The opposite angles are supplementary which implies they sum up to 180°.
angle C is equal to angle D so;
3x + 1 = 76°
3x = 76° - 1 {subtract 1 from both sides}
3x = 75°
x = 75°/3 {divide through by 3}
x = 25°
Therefore, the value of x for measure a base angle for the isosceles trapezoid is equal to 25°.
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select the correct answer from each drop-down menu. a bag contains five tiles numbered 1 through 5. savannah randomly selects a tile from the bag, replaces the tile, and then draws a second tile. when savannah selects her tiles, selecting the first tile and selecting the second tile are (options on drop down. independent or dependent) events. the probability that the numbers on both tiles are even is (choices on drop down. 20, 40, 10, 16)%.
Answers
Selecting the first tile (1st) and selecting the secοnd tile (2nd) are independent events.
The prοbability οf selecting an even number οn a single draw is 2/5 οr 0.4, as there are twο even numbers (2 and 4) οut οf a tοtal οf five pοssible numbers.
Since the events are independent, the prοbability οf selecting an even number οn bοth draws is the prοduct οf the prοbabilities οf selecting an even number οn each draw:
P(bοth even) = P(even οn first) × P(even οn secοnd) = 0.4 × 0.4 = 0.16
Sο the prοbability that the numbers οn bοth tiles are even is 16%.
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Y varies inversley with x. If y = -2 when x = 6, find the value of y when x = -12.
Answers
The value of y for the inverse variation when x = -12 is derived to be equal to 1.
What is inverse variationInverse variation is a mathematical relationship between two variables, in which an increase in one variable leads to a proportional decrease in the other variable. Mathematically, inverse variation can be expressed as y = k/x, where y and x are the two variables, k is a constant of proportionality, and the product of y and x is always equal to k.
when x = 6 and y = -2, then k is derived as:
-2 = k/6
k = -12 {cross multiplication}
when x = -12, y is derived as:
y = -12/-12
y = 1
Therefore, the value of y for the inverse variation when x = -12 is derived to be equal to 1.
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During a 5-day paper recycling drive, the students in a classroom collected 12.4 pounds of paper each day for 4 days and 8.39 pounds of paper on the fifth day. Which steps can be used to find the total number of pounds of paper the students collected for the recycling drive? A Multiply 12.4 by 4, then add 8.39. B Multiply 12.4 by 5, then add 8.39. C Add 12.4 and 8.39, then multiply the result by 4. D Add 12.4 and 8.39, then multiply the result by 5.
Answers
Answer:
A.57.99 B.70.39 C 45.96
Step-by-step explanation:12.4 x 4 + 8.39 = 57.99 for Part A For B, this is 12.4x5+8.39=70.39. C is 12.4+8.39x4=45.96 12.4 + 8.39 x 5 =54.35
I'm not sure whether I should group the responses because there isn't much context, but I hope this helps.