Answer:
kamari
Step-by-step explanation:
Tashaun: [tex]\frac{74}{2}[/tex]= 32mph
kamari: 153/3=51mph
so we can see that kamari is speeding the speed limit is 50 and 51>50 brainliest?
the great zlatan ibrahimović always scores a goal if he manages to take no less than six shots in a game (and sometimes he scores even without shooting). the following is a probability distribution of the number of shots zlatan ibrahimović must make to score a goal:
No. of shots Probability of scoring
0 0.02
1 0.13
2 0.34
3 0.32
4 0.16
5 0.02
6 0.01
(A). Calculate the expected ( mean) number of shots he takes to score a goal ?
(B). Calculate the standard deviation of the distribution.
a) The expected (mean) number of shots that Zlatan Ibrahimović must make to score a goal is 3.11.
b) The standard deviation of the distribution is 2.46.
How are the expected number and standard deviation computed?The expected number or mean (μ) of a distribution is computed as sum resulting from the multiplication of each value of the random variable by its probability and adding the products.
The formula for the mean is given as E(x) = ∑x P(x).
On the other hand, to compute the standard deviation (σ) of a probability distribution, we find each deviation from its expected value, square it, multiply it by its probability, add the products, and take the square root.
No. of shots Probability Expected Squared Squared Deviation
of scoring No. of shots Deviation x Probability
0 0.02 0 9.6721 0.193442
1 0.13 0.13 8.8804 1.154452
2 0.34 0.68 5.9049 2.007666
3 0.32 0.96 4.6225 1.4792
4 0.16 0.64 6.1009 0.976144
5 0.02 0.1 9.0601 0.181202
6 0.01 0.6 6.3001 0.063001
The expected (mean)
number of shots = 3.11 6.055107
Standard Deviation = Square root of 6.055107 = 2.46
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Type the correct answer in the box. Use numerals instead of words.
The cone and cylinder below both have a height of 11 feet.
The cone has a radius of 3 feet.
The cylinder has a volume of 310.86 cubic feet.
Complete the statements using 3.14 for pi. Any non-integer answers in this problem should be entered as decimals rounded to the nearest hundredth.
The volume of the cone is [?]
cubic feet.
The radius of the cylinder is [?]
feet.
The ratio of the volume of the cone to the volume of the cylinder is 1:[?]
.
Which expressions can be used to find each angle measure of a regular polygon with 28 sides? Select all that apply.
The correct answer is the third option: (28 - 2) x 180 / 28.
A regular polygon is what?An -sided polygon with regular sides that are all the same length and symmetrically arranged around a common centre is known as a regular polygon (i.e., the polygon is both equiangular and equilateral).
Every side of a regular polygon with 28 sides is the same length, and every interior angle is the same size.
The formula: gives the sum of the internal angles of a polygon with n sides.
Interior angle total equals (n - 2) x 180 degrees.
Each interior angle of a regular polygon has the same measure, thus we can calculate each interior angle's size by dividing the total of its internal angles by the number of sides. For a regular polygon with 28 sides, the expression to get each angle's measure is as follows:
(28 - 2) x 180 / 28
Simplifying the phrase:
(26 x 180) / 28
For a regular polygon with 28 sides, the shortened expression that may be used to determine each angle measure is:
4680/28
Which is further condensed to:
105*(4/7)
Hence, the appropriate phrase is:
(28 - 2) x 180 / 28 = 4680/28 = 105*(4/7)
As a result, the third option—(28 - 2) x 180 / 28—is the proper response.
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Whats the the sum of x and 2
The sum of x and 2 is equal to x + 2.
What is value?Value in math is the numerical representation of a quantity or expression. It can also be defined as an amount or a numerical representation of a quantity that is assigned to a variable or a constant in a mathematical expression. Value can be expressed in various forms, such as decimal, fraction, and scientific notation. Value is also used to calculate the result of an equation or a problem. Value is a fundamental concept in mathematics, and it is used to measure and compare different quantities.
This equation can be used to calculate the sum of any two numbers, x and 2. For example, if x is equal to 5, then the sum of x and 2 is equal to 5 + 2, which is equal to 7. Similarly, if x is equal to 10, then the sum of x and 2 is equal to 10 + 2, which is equal to 12. Therefore, the sum of x and 2 depends on the value of x.
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What is the percent change from 310 to 155?
Answer: 50% decrease
Step-by-step explanation:
50% of 310 = 155
310-155=155
50% decrease :)
ANSWER: 50% decrease
SOLUTION:
50% of 310 = 155
310-155=155
So in all the answer is.......
50% decrease :)))))
-XOXOXO:)
PLEASE HELP!!
Given ABC shown in the graph below, XYZ is found according to the following combined transformation function.
Look at both photos below to help answer the question.
The coordinates of triangle XYZ are X(-2,-2), Y(2,4), and Z(-4,8).
Describe Transformation?In mathematics, a transformation refers to a change or modification of an object's position, shape, size, or orientation in a coordinate plane or space. Transformations can be described as functions that map the points or vertices of an object to new positions in the plane or space.
Common transformations include:
Translation: a transformation that moves an object without changing its size, shape, or orientation. Translation involves shifting all points of the object by the same distance in the same direction.
Rotation: a transformation that turns an object about a fixed point or axis by a certain angle. Rotation preserves the size and shape of the object, but changes its orientation.
Scaling: a transformation that changes the size of an object by multiplying the coordinates of each point by a fixed factor. Scaling can either enlarge or reduce an object.
Since the transformation function is not provided, I'll assume that D2(ABC) means dilating the triangle ABC with center at the origin and a scale factor of 2.
To find the coordinates of the new triangle XYZ, we can apply the dilation transformation to each vertex of the original triangle:
For vertex A(-1,-1), we multiply its coordinates by the scale factor 2, giving us point X(-2,-2).
For vertex B(1,2), we multiply its coordinates by the scale factor 2, giving us point Y(2,4).
For vertex C(-2,4), we multiply its coordinates by the scale factor 2, giving us point Z(-4,8).
Therefore, the coordinates of triangle XYZ are X(-2,-2), Y(2,4), and Z(-4,8), as shown below:
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Use the data reflected in the graphs above. Which class, if any, has more variability in their data? A) Class A B) Class B C) Neither D) Both show the same variability.
The answer is D but I'm not 100% sure since I don't see the graph
Find value of X and then Y. Not drawn to scale
Answer:
x=66 and y=63
Step-by-step explanation:
The middle triangle is isosceles
57+57+x=180
114+x=180
x=66
Left triangle is equilateral (all angles =60)
60+57+?=180
117+?=180
?=63
Right triangle is isosceles
?=y
y=63
Pls help Which function models the area of a rectangle with side lengths of 2x – 4 units and x + 1 units? What is the area when x = 3?
Answer:
Step-by-step explanation:
The area A of a rectangle is given by the formula:
A = length × width
In this case, the length is 2x - 4 units and the width is x + 1 units. So the function that models the area of the rectangle is:
A(x) = (2x - 4)(x + 1)
Expanding this expression, we get:
A(x) = 2x^2 - 2x - 4x + 4
A(x) = 2x^2 - 6x + 4
To find the area when x = 3, we can substitute x = 3 into the function:
A(3) = 2(3)^2 - 6(3) + 4
A(3) = 18 - 18 + 4
A(3) = 4
Therefore, when x = 3, the area of the rectangle is 4 square units.
complete part A and B
The corresponding point on the graph is (9, 21). This point is within the normal respiratory rate region, which is defined by the system of linear inequalities. Therefore, model breakdown has not occurred.
The given problem involves the normal respiratory rates of children aged 3 to 15 years. The respiratory rate, measured in breaths per minute, is represented as a function of age using a system of linear inequalities. The graph depicts a normal respiratory rate region that models the respiratory rate ranges shown in the table. The problem requires us to identify a specific point on the graph that corresponds to a respiratory rate of 21 breaths per minute for a 9-year-old child. The ordered pair (9, 21) represents the corresponding point on the graph.
Further, we need to determine if this point lies within the normal respiratory rate region or if model breakdown has occurred. The system of linear inequalities defines the normal respiratory rate region, and we can determine if the point (9, 21) satisfies these inequalities. In this case, the point (9, 21) lies within the normal respiratory rate region and satisfies the system of linear inequalities. Therefore, model breakdown has not occurred, and the given model is an appropriate approximation of the normal respiratory rate region for children aged 3 to 15.
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Find the distance between (3,3) & (5,3)
20 POINTS ANSWER FOR BRAINLIST
Multiply. Final answer needs to be in Standard
Form. Two different methods need to be shown.
You can choose between Area Model, Distributive
Property and FOIL.
(3x − 4)(2x − 1)
Answer:
Method 1: Distributive Property
To multiply (3x - 4) and (2x - 1), we can use the distributive property:
(3x - 4)(2x - 1) = 3x(2x) + 3x(-1) - 4(2x) - 4(-1)
= 6x^2 - 3x - 8x + 4
= 6x^2 - 11x + 4
Therefore, the final answer in standard form is 6x^2 - 11x + 4.
Method 2: FOIL
To multiply (3x - 4) and (2x - 1), we can use the FOIL method:
(3x - 4)(2x - 1) = 3x(2x) + 3x(-1) - 4(2x) - 4(-1)
= 6x^2 - 3x - 8x + 4
= 6x^2 - 11x + 4
Therefore, the final answer in standard form is 6x^2 - 11x + 4.
3. A company developed a promising product and wants to make decisions. Based on the best available information, a decision tree is drawn.
a) Calculate expected value at every node. Show work.
b) What is the optimum decision and expected value?
c) What is the optimum decision and expected value if they are seeking at least $1.2M?
The greatest expected value of 1.2.
a) We multiply the value of each potential outcome by its likelihood, then add the resulting products to determine the expected value at each node.
Beginning with the first node on the right, we have:
"Invest" should return 0.7(2) + 0.3(-2) = 1.2.
Don't invest has an anticipated value of 0.5(0) + 0.5(1.5) = 0.75.
The centre node is next:
"Develop" should be expected to have a value of 0.6(1.2) + 0.4(0.75) = 1.05
"Do not develop" should have a value of 0.4(0) + 0.6(0) = 0.
Lastly, at the node on the left:
Market research should be worth 0.5(1.05) + 0.5(0) = 0.525.
In light of this, the anticipated value at each node is:
Spend: 1.2
1.05 Development
Market research: 0.525
b) Since "Invest" has the highest expected value of 1.2, it is the best course of action.
c) If they are looking for at least $1.2M, "Invest" is still the best course of action because it has the greatest expected value of 1.2, which is already above the desired level.
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Write the following absolute value function as a piecewise function.
f(x) = |- x² - 8x - 7|
The absolute value function as a piecewise function f(x) = |- x² - 8x - 7| is
f(x) = { - (x² + 8x + 7) , x ≤ -7 or x ≥ -1
{ x² + 8x + 7 , -7 < x < -1
What is meant by absolute value?
Absolute value is a mathematical function that gives the distance of a number from zero on a number line. It is denoted by two vertical bars enclosing the number and always returns a non-negative value.
What is meant by piecewise function?
A piecewise function is a function that is defined by different expressions or rules on different parts or intervals of its domain. The domain is divided into pieces, and each piece has its own expression or rule.
According to the given information
When x² + 8x + 7 ≥ 0, we have:
f(x) = |-(x² + 8x + 7)| = -(x² + 8x + 7)
When x² + 8x + 7 < 0, we have:
f(x) = |x² + 8x + 7| = x² + 8x + 7
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Calculate the mean and median for the data given 8 1 5 8 0 5 8 2 5 5
Answer:
Mean is 5.5 and Median is 6.5
A flower bed is 2 meters wide and 3 meters long.What is the area of the flower bed i square feet? Round your converted dimensions and your final answer to the nearest hundredth show your work.
Answer:
64.58
Step-by-step explanation:
1 meter is 3.28084 so 3 meters is 9.84252 because you multiply it by 3 or add them to each other 3 times. 2 meters is 6.56168 because you multiply it by 2 or add them to each other. now that you have 6.56168 and 9.84252 multiply them with each other and you get 64.5834666336 but it was said to round to nearest hundredth so since the 3 in front of the 8 is not a 5 and above the answer is 64.58 and not 64.89
Why is the second open interval on which the function is decreasing (0, infinity) and not (0, -infinity) if it’s going down? (Photo attached)
Therefore , the solution of the given problem of function comes out to be the function's behavior on that range because it is not specified for negative values of x.
What does the term function actually mean?The midterm exam will include questions on design, geometry, numbers, each division, as well as actual and hypothetical geographic places. A piece of work describes the connections between variable elements that cooperate to produce the same outcome. A utility is a structure made up of numerous unique parts that work together to create unique outcomes for each input.
Here,
Given that the function in the graph you supplied is undefinable for negative values of x, its domain is (0, infinity).
Therefore, referring to the function as declining on the interval is illogical. (0, -infinity).
As we travel from right to left on the interval, we can observe that the function's values are indeed decreasing. (0, infinity).
We refer to this interval as the function's declining one because of this.
On the interval, we could state that the function is decreasing.
(-infinity, 0). However, in this specific instance, we are unable to discuss the function's behavior on that range because it is not specified for negative values of x.
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is 180. The sum of the measures of the second and third angles is five times the measure of the first angle. The third angle is 26 more than the second. Let x, y, and z represent the measures of the first, second, and third angles, respectively. Find the measures of the three angles.
Answer:
x is first angle
y is second angle
and z is third angle
Step-by-step explanation:
This question is solved by a system of equations. We have that:x is the first angle.y is the second angle.z is the third angle.Doing this, we get that:The first angle measures 30º.The second angle measures 67º.The third angle measures 83º.The sum of the measures of the angles of a triangle is 180. This means that The sum of the measures of the second and third angles is five times the measure of the first angle.This means that:From this, the first angle can be found:The measure of the first angle is of 30º.The third angle is 16 more than the second.This means that:Since We get that the second angle is:The second angle measures 67º.For the third angle:The third angle measures 83º.
A store sells water bottles in large and small sizes. There are 24
large water bottles and 18 small water bottles on display in the
store. The manager of the store wants there to be 3 large water
bottles on display for every 2 small water bottles. Should the
manager make any changes to the current display? Explain.
Answer:
Yes, the manager should make changes to the current display. There should be 36 large water bottles and 36 small water bottles, which would be a 3:2 ratio. To achieve this, the manager should add 12 more large water bottles to the display.
What is the meaning of "the underlying set"?
The underlying set of a group is the set of elements that are being operated on using the binary operation specified in the definition of the group.
What is a set?A set is a collection of distinct objects, which can be anything from numbers, letters, or even other sets.
According to question:In the context of the definition of a group, the "underlying set" refers to the set of elements that are used to define the group. In other words, it is the set of objects or elements that are being combined or operated on using the binary operation specified in the definition.
For example, if we define a group using the set of integers (G = {...,-2,-1,0,1,2,...}) and the binary operation of addition, then the underlying set of the group is the set of integers. Each element in the set of integers is an element of the group, and the binary operation of addition is used to combine two elements of the to create a new element within the group.Similarly, if we define a group using the set of real numbers greater than zero (G = {x | x > 0}) and the binary operation of multiplication, then the underlying set of the group is the set of positive real numbers. Each element in the set of positive real numbers is an element of the group, and the binary operation of multiplication is used to combine two elements of the to create a new element within the group.
In summary, the underlying set of a group is the set of elements that are being operated on using the binary operation specified in the definition of the group.
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ASAP HELP!! Find the value of x.
Answer:
42°
Step-by-step explanation:
2x-6=90 2x=84 x=42
Traveling 65 miles/1 hr, how many minutes will it take to drive 125 miles ?
It would take approximately 115.38 minutes to drive 125 miles at a rate of 65 miles/hour.
How many minutes will it take to drive 125 miles?Speed is simply referred to as distance traveled per unit time.
Mathematically, Speed = Distance ÷ time.
Given that, the speed or rate is 65 miles/1 hr, how many minutes will it take to drive 125 miles.
First, we need to find the time it takes to travel 125 miles at a rate of 65 miles/hour.
We can use the formula:
Speed = Distance ÷ time.
time = distance / rate
time = 125 miles / 65 miles/hour
time = 25/13 hours
Now we can convert hours to minutes by multiplying by 60:
= 25/13 hours × 60 minutes/hour
= 115.38 minutes
Therefore, the required time is approximately 115.38 minutes.
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please help answer this!!
Given m∥n, find the value of x.
(6x+9)° (4x-19)°
Answer:
Since alternative angles are equal then
What is the solution set of √
x + 7 − 1 = x?
Answer:
x = 9
Step-by-step explanation:
Solving radical equations:√x + 7 - 1 = x
√x + 6 = x
Isolate √x,
√x = x - 6
Square both sides,
(√x)² = (x - 6)²
Use identity (a -b)² = a² - 2ab + b²
x = x² - 2*x*6 + 6²
x = x² - 12x + 36
x² - 12x + 36 - x = 0
x² - 13x + 36 = 0
We look for two integers which when added give (-13) and when multiplied gives 36.
So, the factors are (-9) and (-4).
-9 + (-4) = -13 & (-9)*(-4) = 36.
Rewrite the middle term using the factors.
x² - 13x + 36 = x² - 9x - 4x + 36
Take out the common factor 'x' from first and second term & take out the common factor (-4) from third and fourth term.
=x(x -9) -4(x - 9)
= (x -9)(x- 4)
x - 9 = 0 ; x - 4 = 0
x = 9 ; x = 4
But 4 doest not satisfy the equation. So, only 9 is the solution.
Which data set has the largest range?
O A. 14, 19, 18, 35, 32, 38, 40
O B. 102, 105, 103, 110
O C. 5, 6, 75
O D. 1, 9, 2, 5, 4, 19, 2, 4, 3
The data set that has the largest range is C. 5, 6, 75, which is calculated as 75 - 5 = 70.
What is the Range of a Data Set?To find the largest range, we need to calculate the difference between the highest and lowest value in each data set and compare them.
A. For 14, 19, 18, 35, 32, 38, 40, we have:
Range = 40 - 14 = 26
B. For 102, 105, 103, 110, we have:
Range = 110 - 102 = 8
C. For 5, 6, 75, we have:
Range = 75 - 5 = 70
D. For 1, 9, 2, 5, 4, 19, 2, 4, 3, we have:
Range = 19 - 1 = 18
Therefore, data set C has the largest range of 70.
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Evan is going to invest in an account paying an interest rate of 5.4% compounded annually. How much would Evan need to invest, to the nearest dollar, for the value of the account to reach $1,360 in 5 years
On solving the provided question, we can say that - the value of the simple interest will be $ 881.28.
What is interest ?Multiplying the principal by the interest rate, time, and other factors yields simple interest. Simple return equals principle times interest times hours is the marketed formula. It is easiest to compute interest using this formula. A percentage of the principle balance is how interest is most commonly computed. The interest rate on the loan is known as this percentage.
here,
we have
P = 1360;
R = 5.4 ;
T = 12
so, we get,
SI = 1360 X 5.4 X 12 /100
SI =88128/100
= 881.28
Hence, On solving the provided question, we can say that - the value of the simple interest will be $ 881.28.
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During a workout Felicia swims 15 laps in a pool where each lap is 50 yards. Then she walks 30 feet to an indoor track where she runs 5 laps around an indoor track that is 600 feet long. How many miles does she swim, walk, and run?
Felicia swims 0.43 miles, walks 0.0057 miles and runs 0.57 miles. The solution has been obtained by using arithmetic operations.
What are arithmetic operations?
The four fundamental operations, often known as "arithmetic operations," are said to adequately describe all real numbers. The mathematical operations following division, multiplication, addition, and subtraction are quotient, product, sum, and difference.
We are given that she swims 15 laps in a pool where each lap is 50 yards.
By using arithmetic operations, we get
Total yards = 15 * 50 = 750 yard
We know that 1 mile = 1760 yards
So,
750 yards = 0.43 miles
She walks 30 feet.
We know that 1 mile = 5280 feet
So,
30 feet = 0.0057 miles
She runs 5 laps around an indoor track that is 600 feet long.
So, total feet she ran = 5 * 600 = 3000 feet
We know that 1 mile = 5280 feet
So,
3000 feet = 0.57 miles
Hence, she swims 0.43 miles, walks 0.0057 miles and runs 0.57 miles.
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Find the resistance in a 1238 watt circuit with 120 volt electricity passing through it.
The resistance in the circuit is 11.63 ohms
What is resistance?Resistance is the opposite of the flow of current. It can also be defined as the ratio of square of voltage to the power of a circuit. It is measured in ohms.
The factors that affects the resistance of a conductor are;
1. temperature
2. length of the wire
3. Area of the wire
4. Nature of the wire
power = V²/R
R = V²/P
P = 1238 W
v = 120
R = 120²/1238
R = 14400/1238
R = 11.63 ohms
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How many zeroes (real or imaginary) does f ( x ) = x 2 + x − 2 have?
Answer:
2 real zeros at x = - 2 , x = 1
Step-by-step explanation:
f(x) = x² + x - 2
to find the zeros let f(x) = 0 , that is
x² + x - 2 = 0 ← in standard form
(x + 2)(x - 1) = 0 ← in factored form
equate each factor to zero and solve for x
x + 2 = 0 ⇒ x = - 2
x + 1 = 0 ⇒ x = - 1
there are 2 real zeros , x = - 2 and x = 1
Points C , A , and D are located along the edge of a river and point B is on the opposite edge. Use △BCA and △BDA to determine which of the following are possible widths of the river.
Using the two equations, we can determine that the possible widths of the river are 75 m and 90 m.
We can use the properties of triangles to determine the possible widths of the river. Using the triangle △BCA, we can calculate the width of the river using the law of cosines. We know that the angle at C is 90° and the length of side AB is the width of the river. We can calculate the length of side BC using the equation: [tex]BC^2 = AB^2 + AC^2[/tex] - 2(AB)(AC)cos(90°). Similarly, we can use △BDA to calculate the width of the river. We know that the angle at D is also 90° and the length of side AD is the width of the river. We can calculate the length of side BD using the equation: [tex]BD^2 = AD^2 + AB^2[/tex] - 2(AD)(AB)cos(90°). Using the two equations, we can determine that the possible widths of the river are 75 m and 90 m.
the complete question is :
Points C, A, and D are located along the edge of a river and point B is on the opposite edge. The distance between A and D is 40 meters. The distance between C and B is 30 meters. The angles at A and D are both 90 degrees. Use △BCA and △BDA to determine which of the following are possible widths of the river.
a) 60 meters
b) 35 meters
c) 45 meters
d) 50 meters
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