the amount of time shoppers wait in line can be described by a continuous random variable, x, that is uniformly distributed from 4 to 15 minutes. calculate f(x).

Answers

Answer 1

The probability of waiting exactly 4 or 15 minutes is zero, since the uniform distribution is continuous and has no discrete values.

The amount of time shoppers wait in line can be described by a continuous random variable, x, that is uniformly distributed from 4 to 15 minutes.

Uniform distribution is a probability distribution, which describes that all values within a certain interval are equally likely to occur. The probability density function (PDF) of the uniform distribution is defined as follows: `f(x) = 1 / (b - a)` where `a` and `b` are the lower and upper limits of the interval, respectively.

Therefore, the probability density function of the uniform distribution for the given problem is `f(x) = 1 / (15 - 4) = 1 / 11`. Uniform distribution, also known as rectangular distribution, is a continuous probability distribution, where all values within a certain interval are equally likely to occur.

The probability density function of the uniform distribution is constant between the lower and upper limits of the interval and zero elsewhere.

Therefore, the PDF of the uniform distribution is defined as follows: `f(x) = 1 / (b - a)` where `a` and `b` are the lower and upper limits of the interval, respectively.

This formula represents a uniform distribution between `a` and `b`.In the given problem, the lower limit `a` is 4 minutes, and the upper limit `b` is 15 minutes.

Therefore, the probability density function of the uniform distribution is `f(x) = 1 / (15 - 4) = 1 / 11`.

This means that the probability of a shopper waiting between 4 and 15 minutes is equal to 1/11 or approximately 0.0909.

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Related Questions

a coin that is cm in diameter is tossed onto a by grid of squares each having side length cm. a coin is in a winning position if no part of it touches or crosses a grid line, otherwise it is in a losing position. given that the coin lands in a random position so that no part of it is off the grid, what is the probability that it is in a winning position?

Answers

The probability that it is in a winning position will be 0.8036.

What is probability?

Its fundamental concept is that someone will nearly surely occur. The proportion of positive events in comparison to the total of occurrences.

Then the probability is given as,

P = (Favorable event) / (Total event)

A coin that is 2 cm in diameter is tossed onto a grid of squares each having a side length of 4 cm. A coin is in a winning position if no part of it touches or crosses a grid line, otherwise it is in a losing position.

Then the probability of winning is calculated as,

P = [a² - πd² / 4] / (a²)

P = [4² - 3.14 x 2² / 4] / (4²)

P = (16 - 3.14) / 16

P = 0.8036

The probability that it is in a winning position will be 0.8036.

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(1 point) In this problem we will crack RSA. Suppose the parameters for an instance of the RSA cryptosystem are \( N=13589, e=5 . \) We have obtained some ciphertext \( y=5183 . \) a) Factor \( N=1358

Answers

The task is to factorize the given number N = 13589. By finding the prime factors of N, we can break the RSA encryption.

To factorize N = 13589, we can try to divide it by prime numbers starting from 2 and check if any division results in a whole number. By using a prime factorization algorithm or a computer program, we can determine the prime factors of N. Dividing 13589 by 2, we get 13589 ÷ 2 = 6794.5, which is not a whole number. Continuing with the division, we can try the next prime number, 3. However, 13589 ÷ 3 is also not a whole number. We need to continue dividing by prime numbers until we find a factor or reach the square root of N. In this case, we find that N is not divisible by any prime number smaller than its square root, which is approximately 116.6. Since we cannot find a factor of N by division, it suggests that N is a prime number itself. Therefore, we cannot factorize N = 13589 using simple division. It means that the RSA encryption with this particular N value is secure against factorization using basic methods. Please note that factorizing large prime numbers is computationally intensive and requires advanced algorithms and significant computational resources.

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How many wholes are there in 22/3

Answers

22/3 equals 7.3 repeating. The answer to your problem will be 7,

Best answer gets brainliest and 5 stars

Best answer gets brainliest and 5 stars

Answers

Answer:

No, because 6² + 8² ≠ 12²

Step-by-step explanation:

In a right angled triangle,

Perpendicular² + Base² = Hypotenuse² (pythagoras theorem)

But in the given triangle; 6² + 8² ≠ 12²

36 + 64 ≠ 144

100 ≠ 144

Perpendicular² + base² ≠ hypotenuse²

Thus the given triangle is not right angled.

2 Find the value of each variable. 3 X= y = 60° y X​

Answers

Answer:

20, 60

Step-by-step explanation:

3x=60

x=60/3

x=20

y=60

Answer:X=20 and Y=60

Step-by-step explanation: 3 x 20=60=60

Find the directions in which f(x, y, z) = xe + 4z?cos'(Inx) increases and decreases most rapidly at P(1, In2, 1/2). Find the rates of change in these directions.

Answers

The all values have been obtained.

Direction of increasing f(x, y, z) = (1/sqrt(45))(e + 4k).Direction of decreasing f(x, y, z) = (-1/sqrt(45))(e + 4k).Rates of change in the direction of increasing f(x, y, z) = (1/sqrt(45))(e² + 16).Rates of change in the direction of decreasing f(x, y, z) = -(1/sqrt(45))(e² + 16).

As per data function is:

f(x, y, z) = xe + 4z cos'(Inx)

To find: Directions in which f(x, y, z) increases and decreases most rapidly at P(1, In2, 1/2) and Rates of change in these directions.

Let's first calculate the gradient vector,

∇f(x, y, z) = ∂f/∂x i + ∂f/∂y j + ∂f/∂z k,

∂f/∂x = eˣ + 4z cos'(lnx) * 1/x

∂f/∂y = 0

∂f/∂z = 4cos'(lnx)

Rate of change of f(x, y, z) at P(1, In2, 1/2) in the direction of vector,

v = ai + bj + ck is given by

D_vf(P) = ∇f(P).v

Now we need to find a unit vector in the direction of increasing f(x, y, z) and another unit vector in the direction of decreasing f(x, y, z) most rapidly.

Let's find the unit vector in the direction of increasing f(x, y, z) by taking

v = ∇f/|∇f| and the unit vector in the direction of decreasing f(x, y, z) most rapidly by taking

v = -∇f/|∇f|.

For increasing:

|∇f| = √(eˣ + 4z cos'(lnx) * 1/x)² + 0² + 4²

     = √(e¹ + 4 * 1/2 * 1/1)² + 16

     = √45v1

     = (1/sqrt(45))(∂f/∂x i + ∂f/∂y j + ∂f/∂z k)

At P(1, In2, 1/2) is

v1 = (1/sqrt(45))(e¹ + 4 * 1/2 * 1/1 i + 0 j + 4 k)

   = (1/sqrt(45))(e + 4k)

For decreasing:

|∇f| = √(eˣ + 4z cos'(lnx) * 1/x)² + 0² + (-4)²

     = √(e¹ + 4 * 1/2 * 1/1)² + 16

     = √45v2

     = (-1/sqrt(45))(∂f/∂x i + ∂f/∂y j + ∂f/∂z k)

At P(1, In2, 1/2) is

v2 = (-1/sqrt(45))(e¹ + 4 * 1/2 * 1/1 i + 0 j + 4 k)

    = (-1/sqrt(45))(e + 4k)

Now, we need to find the rates of change in the directions v1 and v2. Rate of change of f(x, y, z) at P(1, In2, 1/2) in the direction of v1 is,

D_v1f(P) = ∇f(P).v1

             = (1/sqrt(45))(e + 4k).(e + 4k)

            = (1/sqrt(45))(e² + 16)

            = (1/sqrt(45))(e² + 16)

For the direction of v2,Rates of change of f(x, y, z) at P(1, In2, 1/2) in the direction of v2 is,

D_v2f(P) = ∇f(P).v2

              = (-1/sqrt(45))(e + 4k).(e + 4k)

              = (-1/sqrt(45))(e² + 16)

              = -(1/sqrt(45))(e² + 16)

Therefore, Direction of increasing is (1/sqrt(45))(e + 4k), direction of decreasing is (-1/sqrt(45))(e + 4k), rates of change in the direction of increasing is (1/sqrt(45))(e² + 16) and rates of change in the direction of decreasing is -(1/sqrt(45))(e² + 16).

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When a 10% increase in income causes a 4% increase in quantity demanded of a good?

Answers

When a 10% increase in income causes a 4% increase in quantity demanded of a good is income inelastic.

More specifically, the income elasticity of demand is calculated as the percentage change in quantity demanded divided by the percentage change in income. In this case, we have:

Income elasticity of demand = (% change in quantity demanded) / (% change in income)

= 4% / 10%

= 0.4

Since the income elasticity of demand is less than one, we say that the good is income inelastic. we can say that the income elasticity of demand for the good is positive and less than one. This means that the quantity demanded of the good does not increase proportionally as income increases. Instead, the increase in quantity demanded is less than the increase in income.

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could you help withABCD is similar to EFGH And BC=26, CD=13, FG=10 And GH=x-7find the value of x?

Answers

As per similar rule:

\(\text{ABCD}\approx\text{EFGH}\)

So:

\(\begin{gathered} \frac{BC}{FG}=\frac{CD}{GH} \\ \frac{26}{10}=\frac{13}{x-7}^{} \\ x-7=\frac{10\times13}{26} \\ x-7=5 \\ x=12 \end{gathered}\)

Hi again if you can help me with this question I would really appreciate it :)

Hi again if you can help me with this question I would really appreciate it :)

Answers

i think it is
1. false
2. true
3. false

What is the median of the wave-height distribution? (Round your answer to three decimal places.)For0 < p < 1,give a general expression for the 100pth percentile of the wave-height distribution (p) using the given values of and .(p) =as a model for 1-hour significant wave height (m) at a certain site.

Answers

The 95th percentile of the wave-height distribution would be -0.052 meters.

The median of a distribution is the value that divides the data into two equal halves. To find the median of the wave-height distribution, we need to arrange the wave heights in order from lowest to highest and find the middle value. If there is an odd number of values, then the median is the middle value.

If there is an even number of values, then the median is the average of the two middle values. Since we do not have any data or values given for the wave-height distribution, we cannot determine the median.

The 100pth percentile of the wave-height distribution is the value below which 100p% of the data falls. In other words, if we rank all the wave heights from lowest to highest, the 100pth percentile is the height at which 100p% of the data lies below. A general expression for the 100pth percentile of the wave-height distribution (p) can be given as:

(p) = (1 - p) x + p y

Where x is the wave height corresponding to the (n-1)p-th rank, and y is the wave height corresponding to the np-th rank, where n is the number of observations in the distribution.

Using the model (p) = m as a 1-hour significant wave height (m) at a certain site, we can calculate the 100pth percentile for any given value of p. For example, if p = 0.95, then the 95th percentile of the wave-height distribution would be:

(0.95) = (1 - 0.95) x + 0.95 y

Simplifying this expression, we get:

y = (0.95 - 0.05x)/0.95

Substituting the value of (p) = m, we get:

m = (0.95 - 0.05x)/0.95

Solving for x, we get:

x = (0.95 - 0.95m)/0.05

Therefore, the value of the wave height corresponding to the 5th percentile of the distribution would be:

(0.05) = (1 - 0.05) x + 0.05 y

Simplifying this expression, we get:

x = (0.05y - 0.05)/(0.95)

Substituting the value of (p) = m, we get:

m = (0.05y - 0.05)/(0.95)

Solving for y, we get:

y = (0.95m + 0.05)/(0.05)

Therefore, the value of the wave height corresponding to the 95th percentile of the distribution would be:

(0.95) = (1 - 0.95) x + 0.95 y

Substituting the values of x and y, we get:

(0.95) = (1 - 0.95) [(0.95 - 0.95m)/0.05] + 0.95 [(0.95m + 0.05)/(0.05)]

Simplifying this expression, we get:

m = 0.95y - 0.05x

Substituting the values of x and y, we get:

m = 0.95 [(0.95m + 0.05)/(0.05)] - 0.05 [(0.95 - 0.95m)/0.05]

Simplifying this expression, we get:

m = 19m + 1 - 19

Solving for m, we get:

m = -0.052

Therefore, the 95th percentile of the wave-height distribution would be -0.052 meters.

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Which equation can be used to find m, the number of months it will take for both accounts to have the same amount of money? 112 – 25m 45 = 50 – 60m 112 25 45m = 50m 60 112 25 – 45m = –50m 60 112 25m 45 = 50 60m.

Answers

Linear equation is the equation in which the highest power of the unknown variable is one. The equation to find m, the number of months it will take for both accounts to have the same amount of money, can be given as,

\(112+25m+45=50+60m\)

Thus the option 4 is the correct option.

Given information;

The saving of the first runner is $112.

The amount of gift card the first runner received is $45 and the saving of each month is $25.

The saving of the second runner is $50.

The amount of second runner save each month is $60.

The number of months it will take for both accounts to have the same amount of money is m.

Linear equation

Linear equation is the equation in which the highest power of the unknown variable is one.

As the saving of the first runner is $112. and the amount of gift card the he received is $45. Also his saving of each month is $25. Thus the money saved by him in m months,

\(=112+45+25m\)

As the saving of the second runner is $50 and the amount he save each month is $60. Thus the money saved by him in m months,

\(=50+60m\)

For the same amount of saving in m months the above two equation must be equal. Therefore,

\(112+45+25m=50+60m\)

Rewrite the equation as,

\(112+25m+45=50+60m\)

Hence the equation to find m, the number of months it will take for both accounts to have the same amount of money, can be given as,

\(112+25m+45=50+60m\)

Thus the option 4 is the correct option.

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Answer:

Linear equation is the equation in which the highest power of the unknown variable is one. The equation to find m, the number of months it will take for both accounts to have the same amount of money, can be given as,

Thus the option 4 is the correct option.

Step-by-step explanation:

The annual per capita consumption of bottled water was 30.9 gallons. Assume that the per capita consumption of bottled water is approximately normally distributed with a mean of 30.9 and a standard deviation of 10 gallons.
a. What is the probability that someone consumed more than 36 gallons of bottled​ water?
b. What is the probability that someone consumed between 30 and 40 gallons of bottled​ water?
c. What is the probability that someone consumed less than 30 gallons of bottled​ water?
d.90​% of people consumed less than how many gallons of bottled​ water?

Answers

The probability that someone consumed > 36 gallons of bottled water is 27.09%. The probability that someone consumed between 30 and 40 gallons of bottled water is 63.72%.

The per capita consumption of bottled water is normally distributed with a mean of 30.9 gallons and a standard deviation of 10 gallons.

The formula to find the probability that someone consumed more than 36 gallons of bottled water is:

P(X > 36) = 1 - P(X ≤ 36)

By plugging in the values, we have:

P(X > 36) = 1 - P(Z ≤ (36 - 30.9) / 10) = 1 - P(Z ≤ 0.61)

From the z-table, we find that the probability of Z ≤ 0.61 is 0.7291.

Therefore, P(X > 36) = 1 - 0.7291 = 0.2709 or 27.09%.

The formula to find the probability that someone consumed between 30 and 40 gallons of bottled water is:

P(30 ≤ X ≤ 40) = P(Z ≤ (40 - 30.9) / 10) - P(Z ≤ (30 - 30.9) / 10)

By plugging in the values, we have:

P(30 ≤ X ≤ 40) = P(Z ≤ 0.91) - P(Z ≤ -0.91)

From the z-table, we find that the probability of Z ≤ 0.91 is 0.8186 and the probability of Z ≤ -0.91 is 0.1814.

Therefore, P(30 ≤ X ≤ 40) = 0.8186 - 0.1814 = 0.6372 or 63.72%.

The formula to find the probability that someone consumed less than 30 gallons of bottled water is:

P(X < 30) = P(Z ≤ (30 - 30.9) / 10)

By plugging in the values, we have:

P(X < 30) = P(Z ≤ -0.09)

From the z-table, we find that the probability of Z ≤ -0.09 is 0.4641.

Therefore, P(X < 30) = 0.4641 or 46.41%.

We need to find the z-score for the 90th percentile. From the z-table, we find that the z-score for the 90th percentile is 1.28. Therefore, we can find the corresponding value of X by using the formula:

X = μ + zσ

By plugging in the values, we have:

X = 30.9 + 1.28(10) = 44.88

Therefore, 90% of people consumed less than 44.88 gallons of bottled water.

In conclusion, the probability that someone consumed more than 36 gallons of bottled water is 27.09%. The probability that someone consumed between 30 and 40 gallons of bottled water is 63.72%. The probability that someone consumed less than 30 gallons of bottled water is 46.41%. Finally, 90% of people consumed less than 44.88 gallons of bottled water.

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anyone know the answer?? ​

anyone know the answer??

Answers

Answer:

the second option

Step-by-step explanation:

in ax²+bx+c = 0:

\(x = \frac{-b+-\sqrt{b^2-4ac} }{2a}\)

subtract both sides by 6 to get to this form, as the right side will be left with 0

6x² + 8x - 6 = 0

here, the coefficient for x² (a) is 6, the coefficient for x (b) is 8, and the remaining number added on (c) is -6

plugging our numbers into the formula, we get

\(x = \frac{-8+-\sqrt{(-8)^2-4(6)(-6)} }{2(6)}\\= \frac{-8+-\sqrt{64-(-144)} }{12} \\= \frac{-8+-\sqrt{208} }{12} \\ = \frac{-8+\sqrt{208} }{12} or \frac{-8-\sqrt{208} }{12}\\= 0.53518375848 or -1.86851709182\\= approximately -1.87, 0.54\)

w is directly proportional to u if w=5 when u=3,find u when w is =2/7​

Answers

Answer:

u = 6/35

Step-by-step explanation:

w = k * u

w = ku

Where

k = constant of proportionality

if w=5 when u= 3

w = ku

5 = k * 3

5 = 3k

k = 5/3

find u when w is =2/7​

w = ku

2/7 = 5/3 * U

2/7 = 5/3u

u = 2/7 ÷ 5/3

= 2/7 × 3/5

= (2*3)/(7*5)

= 6/35

u = 6/35

The Weibull distribution is defined as P(X=x;λ,k)=
λ
k

(
λ
x

)
k−1
e
−(x/λ)
k

,x≥0 (a) Assume we have one observed data x
1

, and X
1

∼ Weibull (λ), what is the likelihood given λ and k ? [2 pts] (b) Now, assume we are given n such values (x
1

,…,x
n

),(X
1

,…,X
n

)∼Weibull(λ). Here X
1

,…,X
n

are i.i.d. random variables. What is the likelihood of this data given λ and k ? You may leave your answer in product form. [3 pts] (c) What is the maximum likelihood estimator of λ ?

Answers

In this question, we have only one observed data x1 and X1 follows Weibull (λ).

So, the likelihood given λ and k will be calculated as follows:

P(X1=x1;λ,k)=λk(x1λ)k−1e−(x1λ)k

Now, to calculate the likelihood of x1,

we need to integrate the above expression over k. After integrating,

we get the following expression:

L(λ;x1)=−ln(λ)−kln(x1)+ln(k−1)−(x1/λ)k

The likelihood given λ and k for x1 will be

L(λ;x1)=−ln(λ)−kln(x1)+ln(k−1)−(x1/λ)kb)

If we have n values of (

x1,...,xn) and (X1,...,Xn)

follows Weibull (λ), then the likelihood of this data given λ and k will be:

L(λ;x1,...,xn)= ∏i=1nλk(xiλ)k−1e−(xiλ)k

Now, if we take the log-likelihood of the above expression, then we get the following expression:

l(λ;x1,...,xn)=∑i=1n ln(λ) + (k-1)

ln(xi) - (xi/λ)^k

Using the partial derivative of the above expression and equating it to zero, we can get the maximum likelihood estimator of λ.c) .

To find the maximum likelihood estimator of λ, we will differentiate the log-likelihood function with respect to λ. We will then equate it to zero to find the value of λ that maximizes the likelihood.

∂ln(L)/∂λ= ∑i=1n (k/xi) − n/kλ

k=0n/kλk= ∑i=1n (k/xi)

λ=(∑i=1n (k/xi))^(-1/k)

The maximum likelihood estimator of

λ is (∑i=1n (k/xi))^(-1/k).

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I GIVES BRAINLIEST IF U SOLVE IT

I GIVES BRAINLIEST IF U SOLVE IT

Answers

Answer:

False

Step-by-step explanation:

The following statement is false so in conclusion it will not be enough for both bird houses

Cleopatra= 12 1/2

Jesse=6-10

20ft will not be enough for both jesse and cleopatra !

Hope this helps

                                                                                            -Tobie The dog <3

Pecahan yang senilai dengan 1/5 adalah

Answers

I don’t understand the language

if a = b and b = c then a = c. true or false

Answers

Answer: true

Step-by-step explanation:

Answer: True

Step-by-step explanation: Has to be true if a b and c are all numbers

Find the area of the polygon with the given vertices. W(0, 0), X(0, 3), Y(−3, 3), Z(−3, 0) W(0, 0), X(0, 3), Y(−3, 3), Z(−3, 0) The area is square units.

Answers

The area of the polygon with the given vertices is

Area=9

This is further explained below.

Find the area of the polygon with the given vertices. W(0, 0), X(0, 3), Y(−3, 3), Z(−3, 0) W(0, 0), X(0, 3), Y(−3, 3), Z(−3, 0) The area is square units.?

Generally, A regular polygon is a polygon that is straight equiangular, and equilateral, according to the Euclidean geometry definition. Convex, star, or skew profiles may be assigned to regular polygons.

In conclusion, The specified vertices are used to calculate the area of the polygon.

A=9

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Find the Laplace transform where of the function f(t) =
{ t, 0 < t < {π + t π < t < 2π where f(t + 2 π) = f(t).

Answers

The Laplace Transform of f(t) isL{f(t)} = L{t} + L{t + π}u(t − π) − L{t − 2π}u(t − 2π) + ...

                            = (1/s^2) + e^{−πs}(1/s^2) − e^{-2πs}(1/s^2) + ...= (1/s^2)[1 + e^{−πs} − e^{−2πs} + ...]

Given function is,f(t) ={ t, 0 < t < π π < t < 2π}

where f(t + 2 π) = f(t)

Let's take Laplace Transform of f(t)

                     L{f(t)} = L{t} + L{t + π}u(t − π) − L{t − 2π}u(t − 2π) + ...f(t + 2π) = f(t)

∴ L{f(t + 2 π)} = L{f(t)}⇒ e^{2πs}L{f(t)} = L{f(t)}

     ⇒ [e^{2πs} − 1]L{f(t)} = 0L{f(t)} = 0

when e^{2πs} ≠ 1 ⇒ s ≠ 0

∴ The Laplace Transform of f(t) is

                       L{f(t)} = L{t} + L{t + π}u(t − π) − L{t − 2π}u(t − 2π) + ...

                               = (1/s^2) + e^{−πs}(1/s^2) − e^{-2πs}(1/s^2) + ...

                              = (1/s^2)[1 + e^{−πs} − e^{−2πs} + ...]

The Laplace Transform of f(t) isL{f(t)} = L{t} + L{t + π}u(t − π) − L{t − 2π}u(t − 2π) + ...

                            = (1/s^2) + e^{−πs}(1/s^2) − e^{-2πs}(1/s^2) + ...= (1/s^2)[1 + e^{−πs} − e^{−2πs} + ...]

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You want to use a coordinate proof to prove that midsegment DE of ABC is parallel to AC and half the length of AC. Which is the best first step?

You want to use a coordinate proof to prove that midsegment DE of ABC is parallel to AC and half the

Answers

Answer:

the third one answer choice

Step-by-step explanation:

⊕ Place the triangle on a coordinate grid such that vertex A is at the origin, and segment AC lies on the x-axis.

You will be able to see the length of segment AC and length of segment DE, and also will be able to see if AC║DE.

The test scores for the students in Mr. Miller’s math class are shown here.
52, 61, 69, 76, 82, 84, 85, 90, 94

What is the range of the test scores?

Answers

The range of the test scores in Mr. Miller's math class is 42.

What is the range?

Mathematically, the range refers to the difference between the highest value and the lowest value in a data set.

The range is computed by subtraction of the lowest value from the highest value.

Mr. Miller can use the range to measure the spread or dispersion of the test scores.

Test Scores:

52, 61, 69, 76, 82, 84, 85, 90, 94

Highest score = 94

Lowest score = 52

Range = 42 (94 - 52)

Thus, we can conclude that for the math students in Mr. Miller's class, the range of their test scores is 42.

Learn more about the range at https://brainly.com/question/24326172.

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Jamal decides he wants to shop around for the best price for purchasing an advertisement space in a newspaper. One of the companies he contacts charges $2.00 for each line in the advertisement and an initial fee. For the 3 lines he needs, the company will charge $14.00. Which equation best represents this scenario if y is the cost for an ad with x lines?

Answers

Answer:

Y = $2x + 8

Step-by-step explanation:

Variable cost per line = $2.00

For 3 lines, the Variable cost = $2 x 3 = $6

Total cost for 3 lines = $14.00

Fixed Charges = $14 - $6 = $8

Using the formula, total cost, Y = $2x + $8 = $14

Where x = number of lines needed.

Therefore, total cost, Y = ($2 x 3) + $8 = $14

what is the value of x??

what is the value of x??

Answers

Answer:

42

Step-by-step explanation:

3x + 12 + x = 180

4x  + 12 = 180

4x = 168

x = 42

if there is 23 teachers how many students are there

Answers

Answer:

460

Step-by-step explanation:

each classroom has ab 20 students so 23x20=460

Answer:

460

Step-by-step explanation:

Say each class has about 20 student you would need to multiply 20 by 23 to get you answer.

Which is 460.

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Hopefully that helped.

z varies directly as x^2. If z= 8 when x= 2​, find z when x= 6.

Answers

Thus, the value of z = 72, when x = 6 for the given condition that z varies directly with the square of x.

Define about the direct proportion:

The connection among two variables is known as a direct proportion when their ratios are comparable to a fixed value.

To the contrary, a direct proportion occurs when a change in one quantity prompts a commensurate change in the other amount, or when a change in one quantity prompts a change in the other quantity.The proportional sign (∝) is used to represent a direct proportion. For instance, the sentence "x ∝) y" can be used to indicate the relationship between two variables x and y.

Given data:

z varies directly as x².

z= 8 when x= 2​.

So,

z ∝ x²

z = k x²

k = z/ x² (k is the constant of proportionality)

z= 8 when x= 2​.

k = 8/(2)²

k = 2

Now, when x = 6

z = k x²

z = 2 * (6)²

z = 72

Thus, the value of z = 72, when x = 6 for the given condition that z varies directly with the square of x.

Know more about the direct proportion

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Given A(-1,4), B(2,-5), and C(3, 4), which coordinate pair will make AB perpendicular to CD ?

Answers

Answer:

The coordinate pair of the point D that will make AB perpendicular to CD is the D(6, 3)

Step-by-step explanation:

The slope of the given line AB can be presented as follows;

\(Slope, \, m =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}\)

\(m =\dfrac{-5-4}{2-(-1)} = \dfrac{-9}{3} =-3\)

The slope of a perpendicular line  to a given line is equal to the negative reciprocal of the slope of the given line

Therefore, the slope of the perpendicular to a line that has a slope of m is -1/m

The slope of the perpendicular to the line AB is therefore \(-\dfrac{1}{3}\)

From which we get the equation of the perpendicular to the line AB given as follows;

y - 4 = -1/3 × (x - 3)

y - 4 = -x/3 + 1

y = -x/3 + 1 + 4

y = -x/3 + 5

When x = 6, y = -6/3 + 5 = 3

Therefore, the coordinate pair of the point D that will make AB perpendicular to CD is the D(6, 3).

Using the slope concept, it is found that the coordinate pair is:

\(D\left(x, \frac{x}{3}+9\right)\)

The slope of a coordinate pair \((x_1,y_1)\) and \((x_2,y_2)\) is given by the change in y divided by the change in x, that is:

\(m = \frac{y_2 - y_1}{x_2 - x_1}\)

If two segments are perpendicular, the multiplication of their slopes is -1.

For segment AB, the slope is:

\(m = \frac{-5 - 4}{2 - (-1)} = -\frac{9}{3} = -3\)

At segment CD, we want that:

\(-3m = -1\)

\(m = \frac{1}{3}\)

Considering D(x,y), we have that:

\(\frac{y - 4}{x - 3} = \frac{1}{3}\)

Writing y as a function of x:

\(x - 3 = 3(y - 4)\)

\(3y - 12 = x - 3\)

\(3y = x + 9\)

\(y = \frac{x}{3} + 9\)

Thus, the coordinate pair is:

\(D\left(x, \frac{x}{3}+9\right)\)

A similar problem is given at https://brainly.com/question/24144915

Which of the relations below is a function?
{(2, 3), ( 3, 4), (6, 2), (3, 3)}
{(2, 3), (3, 4), (5, 1), (2, 4)}
{(2, 3), (3, 4), (6,2), (7,3)}

Answers

Answer:

k

Step-by-step explanation:

dw

Answer:

K

Step-by-step explanation:

Dw. Please give me like

Juan buys a bag of 12 tangerines for $3.48.
Find the unit price in dollars per tangerine.
If necessary, round your answer to the nearest cent.

Answers

Answer:

0.29

Step-by-step explanation:

12 divide by $3.48 is 0.29

Helppp!!!!!!!!!!!!!!!!!!!!!

Helppp!!!!!!!!!!!!!!!!!!!!!

Answers

The value of x is equal to 15°

How to determine the value of x?

In Mathematics and Geometry, the sum of the exterior angles of both a regular and irregular polygon is always equal to 360 degrees.

Note: The given geometric figure (regular polygon) represents a pentagon and it has 5 sides.

By substituting the given parameters, we have the following:

3x + 4x + 8 + 5x + 5 + 6x - 1 + 5x + 3 = 360°.

3x + 4x + 5x + 6x + 5x + 8 + 5 - 1 + 3 = 360°.

23x + 15 = 360°.

23x = 360 - 15

23x = 345

x = 345/23

x = 15°.

Read more on sum of interior angles here: brainly.com/question/13293407

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