Please help.
Algebra.

Answer:

B C D

Step-by-step explanation:

PB = \(\sqrt{ (4+2)^2 + (-1+2)^2 }\)  =  \(\sqrt{37}\)  =  6.08

PC =  \(\sqrt{(2+2)^2 + (4+2)^2} = \sqrt{52} = 7.2\\\)

PD = \(\sqrt{(-7+2)^2 + (-7+2)^2} = \sqrt{50} = 7.07\)

The cheapest price for 100 square feet $527 is at the local hardware store.

The total price is equivalent to the price of tile per foot multiplied by 100.

The total price is equivalent to the price of tile per foot multiplied by 100.

Note: This question is incomplete because the graph is missing; here is the graph.

Learn more about square feet in: https://brainly.com/question/478298

Answer:

solve for D: d=0

solve for f: f=0

answer based on taking 'e' as a scientific notation

Answer:

There are 0 solutions

Answer:

Zero

Step-by-step explanation:

Let's solve the equation first.

For now, I will focus on the LHS and simplify that:

3(x + 2) = 3x + 1

3x + 6 = 3x + 1

Rearrange

3x - 3x = 1 - 6

Simplify

0x = -5

0 = -5 which isn't true

So 3(x + 2) = 3x + 1 has 0 solutions.

Answer:

thx you too

Step-by-step explanation:

The expression that represents the difference in degrees of these average temperatures is given as follows:

b.) |55| + |−3| = 58°

The difference between the maximum temperature and the minimum temperature is obtained by the subtraction of these two temperatures.

The temperatures in this problem are given as follows:

Then the difference is given as follows:

55 - (-3).

When a positive number subtracts a negative number, the distributive property is applied to the negative number, meaning that it is equivalent to adding the positive number, hence:

55 - (-3) = 55 + 3 = 58º.

This means that option B gives the correct difference.

More can be learned about the difference between two amounts at https://brainly.com/question/17301989

#SPJ1

For the linear function, a) is true.

b) true, c) true, d) false, e) true.

a) True: Since expected value is a linear function, then the sum of the expected values of two independent random variables x and y is equal to the expected value of their sum (x + y). Thus, E(x + y) = E(x) + E(y). For example, if E(x) = μ and E(y) = μ, then E(x + y) = μ + μ = 2μ. But, E(2x) = 2E(x) = 2μ. Therefore, x + y has the same expected value as 2x. So, the statement is true.

b) True: We know that Var(2x) = 4Var(x) and Var(x + y) = Var(x) + Var(y) because x and y are independent random variables. Since x and y both have variance σ², then Var(x + y) = σ² + σ² = 2σ². Therefore, x + y has the same variance as 2x, that is, 2σ². So, the statement is true.

c) True: E(-X) = -E(X) = -μ. Since x and y have the same expected value μ, then -x and -y have the same expected value -μ. Thus, the statement is true.

d) False: The variance of X - y is σ² + σ² = 2σ² and not 0. Thus, the statement is false.

e) True: We know that the variance of (x + y) / 2 is Var((x + y) / 2) = [Var(x) + Var(y)] / 4 because x and y are independent random variables. Therefore, SD[(x + y) / 2] = √[Var((x + y) / 2)] = √[Var(x) + Var(y)] / 2 = √2σ² / 2 = σ / √2. Thus, the statement is true.

Learn more about linear function

https://brainly.com/question/29205018

#SPJ11

Step-by-step explanation:

if seven times a number decreased by 4 is less than 27,then find the solution set

Answer:

6 times

Step-by-step explanation:

\( \frac{1}{6} \times 36 = 6\)

Okay here we have this:

The exact cost of producing the 31st coffee maker is $2962.80. By substituting x = 32, we find the cost at that specific quantity. This represents the approximate total cost incurred from producing and selling 32 coffee makers.

(A) To find the exact cost of producing the 31st coffee maker, we can substitute x = 31 into the cost function C(x) = 1760 - 0.2x^2 + 45x:

C(31) = 1760 - 0.2(31)^2 + 45(31)

      = 1760 - 0.2(961) + 1395

      = 1760 - 192.2 + 1395

      = 2962.80

Therefore, the exact cost of producing the 31st coffee maker is $2962.80.

(B) To approximate the cost of producing the 31st coffee maker, we can use the marginal cost function C'(x) = -0.4x + 45.

The marginal cost represents the rate at which the cost changes with respect to the quantity produced. Since C'(30) = 33, we can use this information to estimate the change in cost from producing 30 to 31 coffee makers:

C'(30) ≈ (C(31) - C(30))/(31 - 30)

33 ≈ (C(31) - 2930)/(31 - 30)

Now, solving for C(31):

33 ≈ (C(31) - 2930)/1

33 ≈ C(31) - 2930

C(31) ≈ 33 + 2930

C(31) ≈ 2963

Therefore, the approximate cost of producing the 31st coffee maker is $2963.

(C) To approximate the total cost from selling 32 coffee makers, we can again use the cost function C(x) = 1760 - 0.2x^2 + 45x. Substituting x = 32:

C(32) = 1760 - 0.2(32)^2 + 45(32)

      = 1760 - 0.2(1024) + 1440

      = 1760 - 204.8 + 1440

      = 2995.20

Therefore, the approximate total cost from selling 32 coffee makers is $2995.20.

(A) To find the exact cost of producing the 31st coffee maker, we substitute x = 31 into the cost function C(x). This gives us the precise value of the cost at that particular quantity.

(B) In this case, we approximate the cost of producing the 31st coffee maker using the marginal cost function C'(x). Since C'(30) is given,

we can estimate the change in cost from producing 30 to 31 coffee makers. By applying the definition of the derivative, we approximate the cost at x = 31 by rearranging the equation and solving for C(31).

(C) To approximate the total cost from selling 32 coffee makers, we once again use the cost function C(x). By substituting x = 32, we find the cost at that specific quantity. This represents the approximate total cost incurred from producing and selling 32 coffee makers.

It's important to note that these calculations involve approximations based on the given information and the assumptions made. For more accurate results, additional data points or a more precise model may be necessary.

Learn more about substitute click here:

brainly.com/question/29383142

#SPJ11

When searching for the value 10 in the array [2, 3, 5, 6, 9, 13, 16, 19], a recursive binary search algorithm will return false since the element is not found in the array.

About Binary Search Algorithm

The binary search algorithm, applied on arrays are of recursive type. The broad strategy is to look at the middle item on the list. The procedure of the binary search algorithm is either terminated (key found), the left half of the list is searched recursively, or the right half of the list is searched recursively, depending on the value of the middle element.

The function carrying out the binary search algorithm in a code returns true if the desired element is found in the array, else returns false. Since the element 10 is not present in the given array: [2, 3, 5, 6, 9, 13, 16, 19], the binary search algorithm will return false.

Learn more about binary search algorithm here:

https://brainly.com/question/20734425

#SPJ4

Answer:

1) 1076.4ft^2

2). 6561.68ft

3). 2.057kg

4). 1.25×10^-1

5). 6.58×10^1km

6). 278mg

The probability that a value selected at random from this distribution is greater than 31 is essentially 1.

Since the mean of the normal distribution is 31 and the standard deviation is 3, we know that the distribution is centered around 31 and the values are spread out within a range of approximately 3 units on either side of the mean. To find the probability that a value selected at random from this distribution is greater than 31, we need to look at the area under the curve to the right of 31.

Using a z-score table or a calculator, we can find that the z-score for 31 in this distribution is 0. This means that 31 is exactly at the mean of the distribution. To find the area under the curve to the right of 31, we need to find the area between 31 and positive infinity in terms of standard deviations from the mean.

Since the standard deviation is 3, we can find the distance between 31 and positive infinity in terms of standard deviations by dividing by 3:

(infinity - 31) / 3 = infinity/3 - 31/3 = infinity - 10.33

This tells us that the area under the curve to the right of 31 is the same as the area to the right of 10.33 standard deviations above the mean. However, since the normal distribution is continuous and extends infinitely in both directions, the area to the right of any finite value is essentially 1 (i.e. the probability of selecting a value greater than any specific value is essentially 100%).

Learn more about normal distribution here: brainly.com/question/31197941

#SPJ11

Answer:

n=-2c/p +2/p

Step-by-step explanation:

Answer:

x = 8

Step-by-step explanation:

Answer:

Step-by-step explanation:

5(8) = 5 × 5 × 5× 5×5×5×5= 40

The probability density function (PDF) for a uniform distribution ranging between 2 and 6 is 0.25 i.e., the correct option is D.

In a uniform distribution, all values within the range have an equal probability of occurring. The PDF is used to describe the distribution of probabilities over the range. For a uniform distribution ranging between 2 and 6, the PDF would be a horizontal line with a height of 1/4 (or 0.25) between 2 and 6, and zero outside that range. However, at any specific point within the range, the PDF does not have a defined value.

The reason for this is that the PDF for a continuous random variable in a uniform distribution is defined as a constant value divided by the width of the range. Since the range for this uniform distribution is 4 (from 2 to 6), the constant value would be 1/4.

However, at any specific point within the range, the width of the range becomes zero, resulting in an undefined value for the PDF.

Therefore, the PDF for a uniform distribution ranging between 2 and 6 is indeed 0.25, as it provides a constant probability density over the entire range.

Learn more about probability density function (PDF) here:

https://brainly.com/question/30895224

#SPJ11

Answer:

Step-by-step explanation:

To evaluate g(-5), you simply plug in -5 for x in the equation:

g(-5) = (-5)²-10 which is 25 - 10 which is 15. Therefore, g(-5) = 15

Answer:

50

Explaination:

Call the number of penguins that live in the zoo = a

15 = 30% x a

a = 15 ÷ 30%

a = 15 : 0.3

a = 50

Answer:

8/5

Step-by-step explanation:

You can rewrite the equation to 2/5 * 12/3

Which is equal to 2/5*4

So 2 times 4 is 8

So the answer is 8/5

Hope this helps!

To find the common difference of the sequence shown below, we need to use the formula that defines arithmetic sequences. Arithmetic Sequence An arithmetic sequence is a sequence of numbers where the difference between consecutive terms is constant.

The formula that defines arithmetic sequences is given by:an = a1 + (n - 1)dwhere:an: the nth term of the sequencea1: the first term of the sequenced: the common difference between consecutive termsn: the number of terms in the sequence.

We can see from the given points that the sequence is {5, 2, -1}. To find the common difference (d), we can use any two consecutive terms in the sequence. Subtracting 2 from 5 gives:d = 5 - 2 = 3So, the common difference for the sequence shown below is 3.

To know more about Arithmetic Sequence visit:

brainly.com/question/28882428

#SPJ11

Without that information, I cannot interpret or evaluate the validity of the interval. However, I can provide general guidance on how to interpret a confidence interval.

A 95% confidence interval for a parameter (such as the mean age of the six presidents at their inaugurations) is an interval estimate calculated from sample data that has an associated probability of capturing the true population parameter. Specifically, it means that if we were to repeat the sampling process many times and construct 95% confidence intervals each time, approximately 95% of those intervals would contain the true population parameter.

Therefore, if the confidence interval you provided was calculated correctly and is valid, it means that we are 95% confident that the true mean age of the six presidents at their inaugurations falls within the given interval. However, if there are any issues with the data or the assumptions made in calculating the interval, it may not be appropriate to interpret it in this way.

Visit here to learn more about confidence interval:

brainly.com/question/24131141

#SPJ11

The tangent line to a circle is perpendicular to the radius of the circle at the point of tangency. The equation of the tangent line to the circle x^2 + y^2 = 25 at the point (3, -4) is y + 4 = (3/4)(x - 3).

For the equation of the tangent line to the circle x^2 + y^2 = 25 at the point (3, -4), we need to determine the slope of the tangent line and then use the point-slope form of a linear equation.

The given point (3, -4) lies on the circle, so it also lies on the radius of the circle that passes through the origin (0, 0) and (3, -4).

The slope of the radius is given by the change in y divided by the change in x:

Slope of the radius = (y2 - y1) / (x2 - x1)

                   = (-4 - 0) / (3 - 0)

                   = -4/3

Since the tangent line is perpendicular to the radius, the slope of the tangent line will be the negative reciprocal of the slope of the radius.

Slope of the tangent line = -1 / (slope of the radius)

                        = -1 / (-4/3)

                        = 3/4

Now that we have the slope of the tangent line, we can use the point-slope form of a linear equation to find the equation of the tangent line.

Point-slope form: y - y1 = m(x - x1)

Using the point (3, -4) and the slope 3/4, we have:

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

Simplifying the equation:

y + 4 = (3/4)(x - 3)

This is the equation of the tangent line to the circle x^2 + y^2 = 25 at the point (3, -4).

To know more about equation of the tangent line refer here:

https://brainly.com/question/28994024#

#SPJ11

Answer:

The answer is option C.

a number whose square root is a whole number

Hope this helps you

Answer:

C. a number whose square root is a whole number

Step-by-step explanation:

A number whose square root is a terminating decimal is not a perfect square.

A negative whole number cannot be a perfect square.

A number times itself is squared, the number itself is not a perfect square.

The correct answer is option C, a number whose square root is a whole number. For example: 4 is a perfect square.

\(\sqrt{4} =2\)

The square root of a perfect square is always a whole number.

The type of sampling method in which a sample frame is divided into groups is called stratified sampling.

The sampling method that describes the division of a sample frame into groups is called cluster sampling. This method involves randomly selecting groups (or clusters) from the population and then selecting individuals within those clusters to be part of the sample. It is different from stratified sampling, which involves dividing the population into subgroups and then randomly selecting individuals from each subgroup, and simple random sampling, which involves randomly selecting individuals from the population without any grouping. Systematic sampling involves selecting every nth individual from a list of the population.

Learn more about  Sampling:

brainly.com/question/30224766

#SPJ11

When Merida divides her age by 3 and adds 5, the result is 9, now the equation becomes: 9 = (m + 3) ÷ 5.

The link between two expressions on each side of the sign is represented by a mathematical equation. One variable and an equal sign are often present.

The definition an equation in algebra is a mathematical expression that indicates the equivalence of two mathematical terms. In equation 6x + 11 = 14, for instance, the two expressions 6x + 11 and 14 are separated by the symbol "equal."

When Merida divides her age by 3 and adds 5, the result is 9, now the equation becomes: 9 = (m + 3) ÷ 5, this represents the situation where m is Merida's age.

correct option: D

To know more about equation refer to:

brainly.com/question/17145398

#SPJ1

An explanation of an event that is based on repeated observations and experiments is a scientific theory

A thorough, well-researched explanation of a natural occurrence constitutes a scientific theory.

We frequently use the word "theory" to refer to a hypothesis or informed guess in common speech, but in science, a theory is an explanation that is the result of a substantial and repeated investigation. The purpose of theories is to explain a broad concept; they are not intended to establish facts

Some of the most well-known and complicated events are explained by scientific theories. The theories of relativity, evolution, and gravity are a handful of the most well-known scientific concepts.

Know more about scientific theory at:

https://brainly.com/question/22992470

#SPJ4

Answer:

y = 7 * 4x - is a linear

y = (2x+5)^2 is a non linear

y = 10x^3  is a non linear

y = 5x - 3 is a linear

y = x/2 is a linear

y = 2x^3 + 1 is a non linear