What is 80% of Mr Kaisers class turned in their homework assignments there are 30 students in Mr kaisers class

Answers

Answer 1
If 80% of Mr. Kaiser's class turned in their homework assignments, we can find the number of students who turned in their homework by multiplying the total number of students by the percentage in decimal form:

80% = 0.80

Number of students who turned in their homework = 0.80 x 30 = 24

Therefore, 24 students in Mr. Kaiser's class turned in their homework assignments.
Answer 2

Answer:

24 students turned in there homework assignments.

Step-by-step explanation:

80% = .8

30 x .8 = 24


Related Questions

A rectangular room is 2 times as long as it is wide, and its perimeter is 48 meters. Find the dimensions of the room.

Answers

Answer: Let's assume that the width of the rectangular room is "x" meters. Then, according to the problem, the length of the room is 2 times the width, which means the length is "2x" meters.

The perimeter of the room is the sum of all four sides, so we can write:

Perimeter = 2 × (length + width)

Substituting the values, we get:

48 = 2 × (2x + x)

Simplifying the expression, we get:

48 = 2 × 3x

Dividing both sides by 2, we get:

24 = 3x

Solving for "x", we get:

x = 8

Therefore, the width of the room is 8 meters and the length is 2 times the width, which is 2 × 8 = 16 meters.

So the dimensions of the room are 8 meters by 16 meters.

Step-by-step explanation:


Please help thank you very much!

Answers

Hello!

Lets consider what the question asks for:

 --> graphs of either line intersecting/parallel/identical

 --> # of solutions the system has

The information given:

  6x + y = 25

  x + 3y = 3

Let's solve the FIRST problem

  --> graphs of either line intersecting/parallel/identical

             --> let's put both equations into slope-intercept form, where we

                   isolate the y-variable all by itself to one side

                               [tex]6x+3y=25\\3y=-6x+25\\\\y=-2x+\dfrac{25}{3}[/tex]

                                [tex]x+3y=3\\3y=-x+3\\y=-\dfrac{1}{3}x+1[/tex]

             

             --> both equations AREN'T parallel as the slope (coefficient of x-

                   variable) aren't equal

             --> both equations AREN'T identical as they don't look the same

              --> both equations ARE INTERSECTING as they have different

                   slopes and aren't identical

           

Let's solve our second question:

   --> how many solutions does the system have:

       --> both lines intersect

           -->both lines are linear as the highest power that the x-variable

                has are 1

                 --> thus there is only ONE SOLUTION

Answer:

 Intersecting

 Has ONE SOLUTION

after allowing 20% discount on the marked price of a smart boad, 15% vat was levied and sold it . If the different between the selling price with vat and selling price after discount is rs 4500, find the marked price of that smart board.​

Answers

Answer:

mp = 37500

Step-by-step explanation:

let mp be x

D.A = 20×x/100

= 20x/100

=x/5

price after discount = mp - DA

= x-x/5 = 4x/5

VAT= 15%of 4x/5

= 15/100 × 4x/5

= 60x/500

sp with vat= 4x/5 +60x/500

= 460x/500

sp with vat - sp after discount = 4500

460x/500-4x/5=4500

60x= 4500×500

x= 37500

Find the value of x.

Answers

Answer:

x = 4,5

Step-by-step explanation:

These two triangles are similar (according to 3 sides):

The three sides of one triangle are proportional to the three sides of the other triangle:

[tex] \frac{7.5}{5} = \frac{6}{4} = \frac{x}{3} [/tex]

[tex] \frac{6}{4} = \frac{x}{3} [/tex]

Use the property of proportion to find x (cross-multiply):

[tex]4x = 6 \times 3[/tex]

[tex]4x = 18[/tex]

Divide both sides by 4 to make x the subject:

[tex]x = 4.5[/tex]

The amount of money in a savings account increases by 0.2% every month.
Part A
Write a function for the amount of money in the account, B, after t months with an initial deposit of $100.

Part B
By what factor does the amount in the account increase every month? Every year? Every 5 years? Round answers to the nearest thousandth.
each month:
each year:
every five years:

Answers

Part A:
Let B(t) be the amount of money in the account after t months with an initial deposit of $100.
Since the amount increases by 0.2% every month, the amount after t months can be found using the formula:

B(t) = 100 * (1 + 0.002)^t

Part B:
To find the factor by which the amount in the account increases every month, we need to calculate (1 + 0.002):

(1 + 0.002) ≈ 1.002

So the amount in the account increases by a factor of approximately 1.002 every month.

To find the factor by which the amount in the account increases every year, we need to calculate the factor for 12 months:

(1 + 0.002)^12 ≈ 1.026

So the amount in the account increases by a factor of approximately 1.026 every year.

To find the factor by which the amount in the account increases every 5 years, we need to calculate the factor for 60 months:

(1 + 0.002)^60 ≈ 1.136

So the amount in the account increases by a factor of approximately 1.136 every 5 years.

What is the surface area of the triangular prism shown if a = 20 units, b = 29 units, c = 22 units, w = 15 units, and h = 21 units?

Answers

Answer:

The surface area of the triangular prism is 1554 square units

Step-by-step explanation:

To find the surface area of a triangular prism, we need to add up the areas of all its faces. A triangular prism has two congruent triangular bases and three rectangular faces.

First, let's calculate the area of each triangular base. We can use the formula for the area of a triangle, which is A = 1/2 * base * height.

The base of each triangle is one of the sides of the triangle, and the height is the height of the prism, which is h = 21 units. We have:

Area of one triangular base = 1/2 * b * h = 1/2 * 29 * 21 = 304.5 square units

Since there are two congruent triangular bases, the total area of the bases is:

Total area of the bases = 2 * 304.5 = 609 square units

Next, let's calculate the area of each rectangular face. We can use the formula for the area of a rectangle, which is A = length * width.

The length of each rectangular face is one of the sides of the triangle, and the width is the height of the prism, which is h = 21 units. We have:

Area of one rectangular face = w * h = 15 * 21 = 315 square units

Since there are three rectangular faces, the total area of the rectangular faces is:

Total area of the rectangular faces = 3 * 315 = 945 square units

Finally, we can add up the areas of the bases and the rectangular faces to find the total surface area of the prism:

Total surface area = Total area of the bases + Total area of the rectangular faces
= 609 + 945
= 1554 square units

Therefore, the surface area of the triangular prism is 1554 square units.

help timed asap hurry

Answers

The value of y for the given quadrilateral is 5.

What is a quadrilateral?

A closed quadrilateral has four sides, four vertices, and four angles. It is a form of polygon. In order to create it, four non-collinear points are joined. Quadrilaterals always have a total internal angle of 360 degrees.

The Latin words quadra, which means four, and latus, which means sides, are combined to form the English term quadrilateral. A quadrilateral does not always have to have equal lengths on each of its four sides. As a result, depending on the sides and angles, we might have several sorts of quadrilaterals.

We know that the opposite sides of the quadrilateral have a sum of 180 degrees.

Thus,

23y + 13y = 180

36y = 180

y = 5

Hence, the value of y for the given quadrilateral is 5.

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IM BEGGING U SOMEONE

Answers

The dilation of the black figure to blue figure is a reduction with a scale factor of 0.5

How to find the scale of dilation?

A dilation is a transformation that produces an image that is the same shape as the original, but is a different size.

It can either be an enlargement or a reduction.

An enlargement means a scale factor greater than 1 while a reduction is a scale factor less than 1.

Thus, this dilation is a reduction.

Coordinates of initial figure are:

(-8, 10), (10, 10), (8, -8), (2, -8)

Coordinates of dilated figure are:

(1, -4), (4, -4), (-4, 5), (5, 5)

Thus, it is clear that the scale factor is 0.5

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Which function is increasing and has a domain of (1, ∞)?

Answers

The functiοn is increasing and has a dοmain οf (1, ∞) is οptiοn D f(x) = lοg (x - 1) + 1.

What is ratiοnal functiοn?  

Every equatiοn with οne οr mοre ratiοnal expressiοns is said tο be ratiοnal. A fractiοn whοse numeratοr and denοminatοr are pοlynοmials is knοwn as a ratiοnal expressiοn. A ratiο οf twο pοlynοmials is, in οther wοrds, a ratiοnal expressiοn.

The LCD (Least Cοmmοn Denοminatοr) οf the fractiοns, eliminatiοn οf the denοminatοrs, and simplificatiοn οf the resultant equatiοn are methοds fοr sοlving ratiοnal equatiοns. Sοlving the resultant equatiοn—which can require factοring, simplificatiοn, οr the use οf οther algebraic strategies—will prοvide the answers tο a ratiοnal equatiοn.

Fοr the given functiοn:

Optiοn A:

f(x) = -lοg(x - 1) + 2

Here, lοg is negative, hence fοr increasing value οf x f(x) will decrease.

Optiοn B:

f(x) = -lοg(x - 2) + 1

Here, lοg is negative, hence fοr increasing value οf x f(x) will decrease.

Optiοn C:

f(x) = lοg(x - 2) + 1

Here, (x - 2) > =

x > 2

The dοmain dοes nοt satisfy.

Optiοn D:

f(x) = lοg (x - 1) + 1

Here, (x - 1) > 0

x > 1 tο infinity.

Hence, the functiοn is increasing and has a dοmain οf (1, ∞) is οptiοn D f(x) = lοg (x - 1) + 1.

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The complete function is:

convert to slope-intercept form (y=mx+b)

Answers

Start by moving the x over to the right side by subtraction to start isolating y:

-3y = -5x + 15

Now divide completely isolate y by dividing -3 from both sides:

y = (-5/-3)x + (15/-3)

Simplify:

y = 5/3 x + (-5)

This becomes

y = 5/3 x - 5

or

y = 5x/3 - 5

A rectangular skating rink is 30 m by 20 m. It is to be doubled in area by adding a strip at one end and a strip of equal width along one side. Find the width of the strip.

Answers

The width of the added strip is 10 meters.

What is Area?

Area is a measure of the amount of surface enclosed by a two-dimensional shape or figure. It is usually expressed in square units, such as square meters or square inches, and is calculated by multiplying the length of a side or a diameter by itself or by using an appropriate formula for the shape.

If the area of the skating rink is doubled by adding a strip of equal width along one side and another strip at one end, then the new dimensions of the skating rink would be

=>  (30 + x) × (20 + x),

where x is the width of the added strip.

According to the problem, the new area of the skating rink is double the original area, so we can set up the following equation:

=> (30 + x)(20 + x) = 2(30 ×20)

Expanding the left-hand side and simplifying, we get:

=> 600 + 50x + x² = 1200

Rearranging and solving for x, we get:

=> x² + 50x - 600 = 0

Factoring the left-hand side, we get:

=> (x + 60)(x - 10) = 0

Therefore, the possible values for x are x = -60 and x = 10. Since the width of the strip cannot be negative, we reject x = -60 and conclude that the width of the added strip is 10 meters.

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Last week, a candy store sold 6 1/3 pounds of white chocolate. It sold 4 times as much milk chocolate as white chocolate. DUE NOWW HELP ANSWER BOTH BRO
Question 1

How many pounds (in mixed number form) of milk chocolate did the candy store sell last week?


Responses
A 24 2/3
B. 25 2/3
C. 25 1/3
D. 24 1/3

Question 2

How many more pounds of milk chocolate were sold than white chocolate at the candy store last week?

Responses
A. 19 2/3
B. 18
C. 19
D. 18 2/3

Answers

Question 1:

The candy store sold 4 times as much milk chocolate as white chocolate. Since the store sold 6 1/3 pounds of white chocolate, it sold:

4 * 6 1/3 = 25 1/3 pounds of milk chocolate

Therefore, the answer is C) 25 1/3.

Question 2:

The candy store sold 6 1/3 pounds of white chocolate and 25 1/3 pounds of milk chocolate. To find out how many more pounds of milk chocolate were sold than white chocolate, we can subtract the weight of the white chocolate from the weight of the milk chocolate:

25 1/3 - 6 1/3 = 19

Therefore, the answer is C) 19.

Answer:

Question 1 C. 25 1/3

Question 2 C. 19

Step-by-step explanation:

brief :

1. 6 1/3 = 19/3

19/3 * 4 = 76/3

76/3 = 25 1/3

To solve this problem, we need to use the information provided and do some simple arithmetic.

Question 1:

The candy store sold 6 1/3 pounds of white chocolate. Since it sold 4 times as much milk chocolate as white chocolate, we can find the amount of milk chocolate sold by multiplying 6 1/3 by 4:

6 1/3 * 4 = 25 1/3

Therefore, the candy store sold 25 1/3 pounds of milk chocolate last week.

Answer: C. 25 1/3

Question 2:

To find the difference between the amount of milk chocolate and white chocolate sold, we can subtract the amount of white chocolate from the amount of milk chocolate:

25 1/3 - 6 1/3 = 19

Therefore, the candy store sold 19 more pounds of milk chocolate than white chocolate.

Answer: C. 19

chatgpt

sherita is painting the hallway of her apartment she draws a graph illustrating the proportional relationship of the minutes she works x to the passes through the point(16,18)

Part A: which ordered pair on the line would display Sherita’s unit rate of square feet painted per minute.

Part B:select all of the points that lie on the line

(2,2.5)
(3.5,3.9375)
(4,5)
(32,36)
(10,11.5)
(0,0)

Answers

The answer of the given question based on graph is Part A: the unit rate of square feet painted per minute is 1.125, so the ordered pair that displays this unit rate is (1, 1.125) and Part B:  the points that lie on the line are (3.5,3.9375), (4,5), and (32,36).

What is Slope?

Slope refers to the steepness of a line or a surface. More specifically, slope is defined as the ratio of the vertical change (rise) between two points to the horizontal change (run) between the same two points on a line or a surface. In other words, slope measures how much a line or a surface rises or falls as it moves horizontally.

Since the relationship between the minutes worked and the square feet painted is proportional, we can use the slope-intercept form of a linear equation to represent it:

To find the equation of the line, we can use the given point (16,18) and the fact that the relationship is proportional. If we let the unit rate be r (in square feet per minute), then we have:

18 = r(16)

r = 18/16

r = 1.125

So the equation of the line is:

y = 1.125x

Part A: The unit rate of square feet painted per minute is 1.125, so the ordered pair that displays this unit rate is (1, 1.125), since the slope represents the unit rate in a proportional relationship.

Part B: To determine which of the points lie on the line, we can plug in the x-values into the equation y = 1.125x and see if the resulting y-values match.

(y - 18) / (x - 16) = slope

Using the slope calculated above, we can simplify this equation to:

y = 1.125(x - 16) + 18

Now, we can plug in the x and y values for each point and check if they satisfy this equation:

(2,2.5): 2.5 = 1.125(2 - 16) + 18, not on the line

(3.5,3.9375): 3.9375 = 1.125(3.5 - 16) + 18, on the line

(4,5): 5 = 1.125(4 - 16) + 18, on the line

(32,36): 36 = 1.125(32 - 16) + 18, on the line

(10,11.5): 11.5 = 1.125(10 - 16) + 18, not on the line

(0,0): 0 = 1.125(0 - 16) + 18, not on the line

Therefore, the points that lie on the line are (3.5,3.9375), (4,5), and (32,36).

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we know that a confidence interval for a population proportion is (0.22,0.40), with a margin of error of 0.09.


What is the sample proportion, p ?

Answers

It will be 0.31.

P + 0.09 = 0.40
P - 0.09 = 0.22
Then P would equal 0.31 as 0.09 + 0.22 = 0.31, hope this helps :)) have a good day !

write an equation for the ellipse with vertices (-8, 5), (4, 5) and foci (-7,5),(3,5)

Answers

Answer:

Step-by-step explanation:

16

lbozo

a rectangular park has a length of (x + 5) and a width of (x - 2). What is the area of the park?

Answers

The area of a rectangle is given by the formula:

Area = length x width

In this case, the length of the park is x + 5 and the width is x - 2. So, we can substitute these expressions into the formula to get:

Area = (x + 5) x (x - 2)

Expanding the product, we get:

Area = x^2 + 5x - 2x - 10

Simplifying, we have:

Area = x^2 + 3x - 10

Therefore, the area of the rectangular park is given by the expression x^2 + 3x - 10.

I = E/R solve for R
pls help ​

Answers

Step-by-step explanation:

I = E/R    multiply both sides of the equation by R

I R = E / R  * R

I R = E     Now divide both sides by I

R  = E/ I

Describe the graph of the equation x=4. Is the equation a function?

Answers

Answer:

x = 4 is a straight, vertical line at 4 on the x axis.

Need help, will give points.

Answers

The value of (f o g)(3) using composite function is 35

What is composite function?

Composite function refers to the combining of functions in a manner where the output from one function becomes the input for the next function.

To calculate the composite function (f o g)(3), we use the techniques below.

From the question,

Given:

f(x) = 3x-1g(x) = x²+3

Note that,

(f o g)(3) = f(g)(3)

Step 1: Find g(3)

To find g(3) we suebtitute the value of x in g(x) by 3

Therefore,

g(3) = 3²+3g(3) = 12

Step 2: To find f(g)(3), we subetitute the value of x in f(x) by 12

f(g)(3) = 3(12)-1 f(g)(3) = 36-1f(g)(3) = 35

Hence, (f o g)(3) is 35

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1. Explain the difference between an in-text citation and the reference list.​

Answers

Answer:

In-text citations are the short citations you include in the written text that help a reader to understand which sources you are quoting or referring to in your writing example(Field, 2022). Reference is the full details of the source you have cited in your writing.

Translateeachexpression. Words
Expression
1. 2. 3. 4.
“five more than a number” “the quotient of a number and -2” “twice a number”
“a number decreased by 7”
“the product of a number and twelve” “three subtracted from a number” “earning $15 per hour”
“$5 less than the cost of the ticket”
“the sum of a number and 24”
“50 markers divided among several students” “two-fifths of a number”
“half a number minus nineteen”
“11 less than the product of a number and -4”
“the total of eight times a number and five”
“the difference of a number squared and 14”
“three-fourths of a number plus17

Answers

Answer:

Step-by-step explanation:

5 + x (where x represents the number)

x / (-2)

2x

x - 7

12x

x - 3

$15h (where h represents the number of hours worked)

C - $5 (where C represents the cost of the ticket)

x + 24

50 / n (where n represents the number of students)

(2/5)x

(1/2)x - 19

-4x - 11

8x + 5

x^2 - 14

(3/4)x + 17

----------------------------------

Five added to a number

The result of dividing a number by -2

Two times a number

A number decreased by 7

The result of multiplying a number by 12

A number decreased by 3

Earning $15 per hour

The cost of the ticket minus $5

The sum of a number and 24

Dividing 50 markers among several students

Two-fifths times a number

Half of a number minus 19

The result of subtracting 11 from the product of a number and -4

The sum of eight times a number and five

The difference between the square of a number and 14

Three-fourths times a number plus 17

Jane won 9 out of the 10 video games she played. What percent of the video games did Jane win?



Convince Me!

When using an equivalent fraction to find a percent, why do you write 100 as the denominator?

Answers

Jane won 90% of the video games. The solution has been obtained by using the arithmetic operations.

What are arithmetic operations?

The four fundamental operations, sometimes known as "arithmetic operations," are believed to adequately characterise all real numbers. Division, multiplication, addition, and subtraction are followed by the mathematical operations quotient, product, sum, and difference.

We are given that Jane won 9 out of the 10 video games she played.

Let the percentage be x.

Using the multiplication operation, we get,

⇒ 10 * x% = 9

⇒ 10 * [tex]\frac{x}{100}[/tex] = 9

⇒  [tex]\frac{x}{10}[/tex] = 9

⇒ x = 90

Hence, Jane won 90% of the video games.

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Since, there are multiple questions so, the question answered above is:

Question: Jane won 9 out of the 10 video games she played. What percent of the video games did Jane win?

Multiply and write the fraction or mixed number in simplest form 2/5x6/7=

Answers

Answer:

[tex]\frac{12}{35}[/tex]

Step-by-step explanation:

[tex]\frac{2}{5}[/tex] x [tex]\frac{6}{7}[/tex] = [tex]\frac{12}{35}[/tex]

[tex]\frac{12}{35}[/tex] is already in simplest form, so the answer is [tex]\frac{12}{35}[/tex]

Part 1 of 3
O Points: 0 of 1
A manufacturing company makes two types of water skis, a trick ski and a slalom ski. The relevant manufacturing
data are given in the table.
Labor-Hours per Ski
Trick Ski
9
1
Department
Fabricating
Finishing
Answer parts (A), (B), and (C) below.
Slalom Ski
6
1
Save
Maximum Labor-Hours
Available per Day
432
63
(A) If the profit on a trick ski is $60 and the profit on a slalom ski is $50, how many of each type of ski should be
manufactured each day to realize a maximum profit? What is the maximum profit?
The maximum profit is $. The maximum occurs when
trick skis and
slalom skis are produced.

Answers

The maximum profit of manufacturing company is  = $3150

What do you mean by the term Linear Equation in one variable ?

If an equation is in ax + b = c and there is only one variable in the equation then it is called linear equation in one variable. a , b , c are real number and a is not equal to 0.

To maximize  profit, we must determine the number of trick  and slalom skis to produce each day, subject to the constraints of available labor hours.

Let x be the number of  skis and y be the number of slalom skis produced per day.

 The objective function to be maximized is:

Profit = 60x50 a

With the following limitations:

Production hours: 9x 6 a ≤ 432

Final hours: x y ≤ 63

Non-negativity constraints: x ≥ 0, y ≥ 0

We can solve this linear programming problem using graphical or algebraic methods. Here we  use algebraic methods:

From the second limit, we get y ≤ 63 - x.

If this inequality is replaced by the first limit, we get:

9 x 6 (63 - x) ≤ 432

3x ≤ 54

x ≤ 18

This means that the maximum production rate is 18 pieces per day. Replacing x = 18 by the inequality y ≤ 63 - x, we get:

y ≤ 63 – 18 = 45

So the maximum production is 45 slalom skis  per day.

 To verify that this is the correct solution, we need to ensure that it satisfies the non-negativity constraints:

x ≥ 0 and y ≥ 0 are already given in the assignment statement.  

Therefore, the maximum profit is:

Profit = 60(18) 50(45) = $3150

The biggest profit is when 18 trick skis and 45 slalom skis are made per day.

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HELPPP!!! ASAP SHOW WORK PLS

Answers

Therefore, only the points (4, 1) and (3, 8) can be used to find the distance between the points (4, 1) and (3, 8) using the Pythagorean theorem.

What is coordinate?

In mathematics, a coordinate is a set of numbers that uniquely determines the position of a point or an object in space. The most common coordinate system is the Cartesian coordinate system, which uses two or three numerical values to locate points on a plane or in space.

Here,

To find the distance between the points (4, 1) and (3, 8) using the Pythagorean theorem, we need to use the coordinates of these two points to form a right-angled triangle, with the line segment connecting the two points as its hypotenuse. Therefore, the points that can be used to find the distance between the points (4, 1) and (3, 8) using the Pythagorean theorem are:

(4, 1) and (3, 8)

The point (0, 0) cannot be used to find the distance between the two given points using the Pythagorean theorem because it is not on the line segment connecting the two points.

The point (4, 8) cannot be used to find the distance between the two given points using the Pythagorean theorem because it is not on the line segment connecting the two points.

The point (4, 3) cannot be used to find the distance between the two given points using the Pythagorean theorem because it is not on the line segment connecting the two points.

The point (1, 8) cannot be used to find the distance between the two given points using the Pythagorean theorem because it is not on the line segment connecting the two points.

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in an examination held it was discovered that 960 candidate took mathematics 780 took physics and 572 took chemistry .of these numbers 300 took both Mathematics and physics 340 took both Mathematics and chemistry 260 took both physics and chemistry while 130 candidates took all the three papers .how many candidates were there in that centre ?how many took Mathematics and physics? Only translate in a venn diagram​

Answers

Answer 1452

Step-by-step explanation:

n(m n p n c) =n(m) + n(p) + n(c) - n(m n p) - n(m n c) - n(p n c) + n(m n p n c) = 960+ 780 + 572 - 300 - 340 - 260 + 130 = 1452

Find the value of J.

Answers

The value of j is equal to 9√3 meters.

What is a 30-60-90 triangle?

In Mathematics and Geometry, a 30-60-90 triangle is also referred to as a special right-angled triangle and it can be defined as a type of right-angled triangle whose angles are in the ratio 1:2:3 and the sides are in the ratio 1:√3:2.

This ultimately implies that, the length of the hypotenuse of a 30-60-90 triangle is double (twice) the length of the shorter leg (adjacent side), and the length of the longer leg (opposite side) of a 30-60-90 triangle is √3 times the length of the shorter leg (adjacent side).

Note: j is the side opposite to the 60° angle.

The side opposite to the 60° angle, j = 9 × √3

The side opposite to the 60° angle, c = 9√3 meters.

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A random sample of 11 observations from one population revealed a sample mean of 22 and a sample standard deviation of 4.3. A random sample of 8 observations from another population revealed a sample mean of 26 and a sample standard deviation of 4.4.

Answers

The test statistic is less than the critical value, so, we reject the null hypothesis and conclude that there is a statistically significant difference between the population means.

What is a two-sample t-test?

A two-sample t-test is used to compare the means of two samples to determine if there is a statistically significant difference between them.

To answer this question, we must conduct a two-sample t-test.

In this case, the null hypothesis is that there is no difference between the population means, and the alternative hypothesis is that there is a difference between the population means.

The test statistic is calculated using the following formula:

t = (x₁ - x₂) / (√((s₁²/n₁) + (s₂²/n₂)))

Where x₁ and x₂ are the sample means of the two samples, s₁ and s₂ are the sample standard deviations, and n₁ and n₂ are the sample sizes.

Plugging in the sample data, we get:

t = (22 - 26) / (√((4.3²/11) + (4.4²/8)))

= -1.98

The critical value of t for a two-tailed test at the 0.01 significance level is 2.58.

Since the test statistic is less than the critical value, we reject the null hypothesis and conclude that there is a statistically significant difference between the population means.

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Question:

A random sample of 11 observations from one population revealed a sample mean of 22 and a sample standard deviation of 4.3. A random sample of 8 observations from another population revealed a sample mean of 26 and a sample standard deviation of 4.4. At the 0.01 significance level, is there a difference between the population means?

Riley was a spectator at his town's air guitar competition. Contestants were allowed to play either the acoustic or electric air guitar, but not both. Riley recorded which type of guitar each contestant played. He also counted the number of contestants wearing different kinds of pants, as there were some interesting stylistic choices.

What is the conditional probability that a randomly selected contestant played an acoustic guitar, given they wore leather pants?
show all steps

Answers

The conditional probability that a randomly selected contestant played an acoustic guitar, given they wore leather pants, is 0.6 or 60%.

What is Probability ?

Probability is the measure of the likelihood or chance of an event occurring. It is a mathematical concept that is used to quantify uncertainty and provide a basis for making informed decisions in various fields such as science, engineering, economics, and finance.

To find the conditional probability that a randomly selected contestant played an acoustic guitar, given they wore leather pants, we need to use the formula for conditional probability:

P(A | B) = P(A and B) / P(B)

where A is the event that the contestant played an acoustic guitar, and B is the event that the contestant wore leather pants.

We are not given the total number of contestants in the competition, but we can use the information provided in the table to calculate the probabilities of A and B, as well as the joint probability of A and B.

Let's first calculate the probability of B:

P(B) = number of contestants wearing leather pants / total number of contestants

P(B) = 15 / 45

P(B) = 1/3

Now, let's calculate the joint probability of A and B, i.e., the probability that a randomly selected contestant played an acoustic guitar and wore leather pants:

P(A and B) = number of contestants who played acoustic guitar and wore leather pants / total number of contestants

P(A and B) = 6 / 45

Finally, we can use the formula for conditional probability to find the probability that a randomly selected contestant played an acoustic guitar, given they wore leather pants:

P(A | B) = P(A and B) / P(B)

P(A | B) = (6 / 45) / (1/3)

P(A | B) = 0.6

Therefore, the conditional probability that a randomly selected contestant played an acoustic guitar, given they wore leather pants, is 0.6 or 60%.

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Find the slope of the line shown in the graph. On a coordinate plane, a line goes through (0, negative 1) and (3, 0). a. 3 c. Negative one-third b. -1 d. One-third Please select the best answer from the choices provided

Answers

Answer:

The slope is [tex]\frac{-1}{3}[/tex]

Step-by-step explanation:

From the two points (0,-1) (3,0). The y values are 0 and -1. The x values are 3 and 0.  The slope is the change in y over the change in x.  You find the change by subtracting.

[tex]\frac{0-1}{3-0}[/tex] = [tex]\frac{-1}{3}[/tex]

Helping in  the name of Jesus.

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