Find the value of each variable. If your answer is not an integer, express it in simplest radical form.

PELASE HELP ME

The midpoint has coordinates (19,19) as per the midpoint formula.

The statement is false.

The statement is false. The midpoint of the segment joining two points is determined by taking the average of their x-coordinates and the average of their y-coordinates. In this case, the two given points are (0,0) and (38,38).

To find the x-coordinate of the midpoint, we take the average of the x-coordinates of the two points:

(x1 + x2) / 2

= (0 + 38) / 2

= 38 / 2

= 19

Therefore, the x-coordinate of the midpoint is 19, which matches the statement. However, to determine if the statement is true or false, we also need to check the y-coordinate.

To find the y-coordinate of the midpoint, we take the average of the y-coordinates of the two points:

(y1 + y2) / 2

= (0 + 38) / 2

= 38 / 2

= 19

The y-coordinate of the midpoint is also 19. Therefore, the coordinates of the midpoint are (19,19), not 19 as stated in the statement. Since the midpoint has coordinates (19,19), the statement is false.

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Answer:

Variance

Step-by-step explanation:

Biased estimators ar ethe values in which the calculated value is less than the estimated values .

For statistics sector this word is used.

Mean and medians are standards and unbiased estimators .

Option A

In between: variance, proportion, median and mean, variance is considered a biased estimator.

An estimate that deviates from the genuine population value is said to be biased. If the kind and extent of the bias are known, a biased sample may still be informative. When a sample's value matches the actual value of a population parameter, that is an unbiased estimator.

Because they are centered on parameters, the sample percentage (p) and sample mean (x) are both unbiased estimators.

When the population is normal, the sample median is a fair estimate of the population median. It is untrue that the sample median is a fair estimator of the population median for a broad population, nevertheless. When the population is not symmetric, the sample mean is a biased estimator of the population median.

A biased estimate of the population variance is the sample variance.

Therefore, a biased estimator is variance.

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Answer: She's spending less so she should buy it becasue it's less than her overall.

Step-by-step explanation:

$18,000

Rate is 7.5

years 5

Intrest= 18000x7.5x5/100=

180x7.5x5/1=$6750

Selling price= $18000+$6750=$24750

The first step in solving for the missing variable is to move the known values to one side of the equation. In this case, we would move the -123 to the opposite side of the equation:174 - _ = -123174 + 123 = _When we add 174 and 123, we get 297. Thus, the answer is B) 297.In summary, to solve for the missing variable in a subtraction problem, the known variables should be moved to one side of the equation, and the missing variable should be isolated on the other side. In this instance, we know that the difference between 174 and the missing value will result in -123, so moving the -123 to the opposite side of the equation lets us add the known values, thus determining the missing variable.

Answer:

OK I will If u need any math help just ask me!!

Step-by-step explanation:

Have a wonderful day!!!

Answer:

i can help you with math i have an A+ currently and i would love yo help you. have a good day!

Standardize every test score from Mr. Bowman's class, the new mean would be 0, the new standard deviation would be 1, and the shape of the distribution would remain the same as before.

Let's first understand what standardizing means.
Standardizing test scores involves transforming the original scores to a new scale, called z-scores.

This process is done by subtracting the mean (average) score from each test score and dividing the result by the standard deviation of the scores. The formula for finding the z-score is:
z = (X - μ) / σ
X is the original test score, μ is the mean, and σ is the standard deviation.
Now, let's discuss the properties of the standardized scores:
New mean:

Standardize the test scores, the new mean (average) of the z-scores will always be 0.

This occurs because we subtract the mean from each test score, making the sum of the differences equal to 0.
New standard deviation:

After standardization, the standard deviation of the z-scores will always be 1.

This is because we divide each score by the original standard deviation, results in the new standard deviation being equal to 1.
Shape of the distribution:

The shape of the distribution (i.e., the pattern of the scores) will not be affected by standardization.

If the original scores followed a bell-shaped curve, the standardized scores would maintain the same bell shape.

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The following statements are true:

Segment DEF is parallel to ABC

The line segment  AB is parallel to DE

Line FC is parallel to AD

the line that is skewed to DE is BC

One of the first areas of mathematics is geometry, along with arithmetic. It is concerned with spatial characteristics like the separation, shape, size, and relative placement of objects.

The given diagram is a triangular prism. From the diagram, some of the sides are parallel to each other (that is facing each other directly)

Some of the lines are also parallel to each other. From the given diagram, the sides that are parallel to each other are;

DEF is parallel to ABC

CADF is parallel to CBEF

For the lines, the lines that are parallel to each other are:

AD is parallel to BE

AB is parallel to DE

FC is parallel to AD

Skew lines are straight lines that do not intersect and are not in the same plane. Hence the line that is skewed to DE is BC

The missing image is attached with the answer below.

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Answer:

False

Step-by-step explanation:

The question is asking for the absolute value of -1. The absolute value is the distance of a number from 0. Think of a number line. -1 is one place away from 0, so the absolute value of -1 is 1. Therefore, the statement is not true.

To find the probability that it takes Marc more than 46 minutes to make dinner, we need to calculate the proportion of the total range of time that falls beyond 46 minutes.

The total range of time is given as 53.5 minutes - 24.5 minutes = 29 minutes.

Since the distribution is uniformly distributed, the probability of Marc taking more than 46 minutes is equal to the proportion of time beyond 46 minutes divided by the total range.

The time beyond 46 minutes is 53.5 minutes - 46 minutes = 7.5 minutes.

Therefore, the probability that it takes Marc more than 46 minutes to make dinner is:

P(Marc takes more than 46 minutes) = 7.5 minutes / 29 minutes ≈ 0.2586 or 25.86% (rounded to two decimal places).

So, the probability is approximately 0.2586 or 25.86%.

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Answer:

Sorry I can't give you a straight answer right now because I'm in a hurry but here is some help;

Step-by-step explanation:

Remember:

The property of the triangle congruence state that a ≅ B then B ≅ A are:

The triangle is a polygon that has 3 edge and vertices. Triangle is one of the basic shape in the geometric. The area of the triangle is formulated as base of the triangle * height of triangle x 0,5. The value of three triangle edge degree is 180°.

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After integration, the equation a1x2 + y2f(x,y) da = a(11 - a2) = [(11 - 2sqrt(30))/2] follows. π(22 - 2[(11 - 2sqrt(30))/2]²) = 1.

Given that a 1 and the circle x2 + y2 a, the integral of the function f(x,y) = 11 - x2 - y2 is as follows:

∬[x^2 + y^2 < a^2] (11 - x^2 - y^2) dA

To calculate the integral's value, we can use polar coordinates. The boundaries of inclusion are 0 r a and 0 2. In polar coordinates, r dr d denotes the differential area element dA.

Consequently, we have:

∬[x^2 + y^2 < a^2] (11 - x^2 - y^2) dA

= ∫[0,2π] ∫[0,a] (11 - r^2) r dr dθ

= ∫[0,2π] [(11a^2)/2 - (a^4)/4] dθ

= 2π [(11a^2)/2 - (a^4)/4]

= πa^2 (22 - 2a^2)

We must now work out the equation to determine the value of a such that the integral equals 1.

a^2 π (22 - 2a^2) = 1

When we divide both sides by and rearrange them, we get:

22a^2 - 2a^4 = 1

2a^4 - 22a^2 + 1 = 0

The quadratic formula can be used to answer this quadratic equation:

a^2 = [22 +/- sqrt(22^2 - 4(2)(1))]/(2(2))

a^2 = [22 − sqrt(480)]/4

a^2 = [22 ± 4sqrt(30)]/4

a^2 = (11 ± 2sqrt(30))/2

We pick the negative root since an is a 1, which is:

a^2 = (11 - 2sqrt(30))/2

In light of this, a1x2 + y2f(x,y) da = a(11 - a2) = [(11 - 2sqrt(30))/2]

π(22 - 2[(11 - 2sqrt(30))/2]²) = 1.

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Mother spent (4r - 8) dollars more on cherries than did the father.

An expression using numbers and related operations is called a numerical expression.

According to the question, a pound of cherries costs $4.

Mom purchased r pounds.

The price of the cherry is calculated as follows: 4r = weight x $/lb.

Father purchased 2 pounds, thus the price of the cherries is 4 (2), or $8.

We remove the smaller value from the higher value, which is 4r - 8, where r must be more than two. Given that the mother spent more money on cherries than the father, the mother's cost of cherries is a greater value.

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The sum of the two solutions is equal to 17/5.

Here we want to solve the quadratic equation:

5x^2 - 16x + 3 = 0

Using the quadratric formula, we will get the solutions:

\(x = \frac{16 \pm \sqrt{(-16)^2 - 4*3*5} }{2*5} \\\\x = \frac{16 \pm14 }{10}\)

Then the two solutions of the quadratic equation are:

x = (16 + 14)/10 = 30/10 = 3

x = (16 - 14)/10 = 2/10 = 2/5

The sum is: 3 + 2/5 = 3 + 2/5 = 15/5 + 2/5 = 17/5

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Among the following statements, the one that best describes a probability distribution is: A list of the outcomes of a random experiment and the probability of each outcome.

A probability distribution is a list of the possible outcomes of a random experiment and the probability of each outcome. It provides a complete description of the possible outcomes and their associated probabilities for an experiment. Probability distributions are used to calculate the likelihood of specific events occurring and to determine the expected value of a random variable.

It lists all possible outcomes of a random experiment and assigns a probability to each outcome. The probabilities assigned to each outcome must add up to 1.

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If the brokerage gets 7 or more correct guesses out of 10, we can reject the hypothesis that they are guessing randomly, as the probability of getting 7 or more correct guesses by random guessing is less than or equal to 0.05

To choose the threshold number x such that the brokerage has no more than a 5% chance of getting x or more guesses correct if it was guessing randomly, we can use the binomial probability distribution.

In this case, we assume that the brokerage is guessing randomly with a probability of success p = 1/2 for each guess. The number of guesses, n, is the total number of trials.

We want to find the value of x such that the probability of getting x or more correct guesses is less than or equal to 0.05 (5%).

To calculate this, we can use the cumulative probability function of the binomial distribution.

Using statistical software or a binomial probability table, we can find the value of x such that P(X ≥ x) ≤ 0.05.

For example, if we consider n = 10 (total number of guesses), we can find the value of x such that P(X ≥ x) ≤ 0.05. From the binomial distribution, we find that x = 7 satisfies this condition.

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Answer:

length=80m

breadth=144m

hope it is helpful for you

After 15 minutes, the difference of the temperatures is 18 degrees Fahrenheit. We use the room temperature of 68 degrees Fahrenheit to count the difference.

Room temperature is a range of comfortable air temperature indoors. The average room temperature is around 20°C, or 68 degrees Fahrenheit.

To cool the room stays at 68 degrees Fahrenheit, a cup of boiling water is placed in it. The difference between the water temperature and the room temperature is halved every 5 minutes.

Find the difference after 15 minutes!

The boiling water has a temperature of 212 degrees Fahrenheit. So, the initial difference of the temperatures is

= 212 - 68

= 144 degrees Fahrenheit

After 5 minutes, the difference would be 144/2 = 72 degrees Fahrenheit.

After 10 minutes, the difference would be 72/2 = 36 degrees Fahrenheit.

After 15 minutes, the difference would be 36/2 = 18 degrees Fahrenheit.

Hence, the difference of the water temperature and room temperature after 15 minutes is 18 degrees Fahrenheit.

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Answer:

x≤−9

Step-by-step explanation:

Answer:

The time it takes Ms. Croft to reach the cruise ship by speedboat = 6.11 hours

The time it takes Ms. Croft to reach the cruise ship by helicopter = 6.25 hours

since it takes less time for Ms. Croft to reach the cruise ship by taking the speedboat, her best choice to retrieve the artifact is to take the speedboat.

Step-by-step explanation:

The given parameters are;

The elapsed time by which Ms. Croft missed the boat = 5 hours

The speed of the cruise ship = 528 mi/day

The speed of the speedboat = 100 miles in 2.5 hours

The speed of the helicopter = 90 mph

The time it would take Ms. Croft to arrive at the harbor = 3.5 hours

Therefore, we have;

The cruise ship's speed = 528 miles per 24 hours = 528/24 mph = 22 mph

The location of the cruise after the first 5 hours = 5 × 22 = 110 miles

The speed of the speedboat = 100 miles per 2.5 hours = 100/2.5 = 40 mph

By traveling with a speed boat

The time at which Ms. Croft will intercept the cruise ship is given by the following relation;

40 mph × t = 22 mph × t + 110 miles

Which gives;

40 mph × t - 22 mph × t = 110 miles

18 mph = 110 miles

t = 110 miles/(18 mph) = 55/9 hours ≈ 6.11 hours

By taking the helicopter, we have;

Upon arrival at the harbor, after 3.5 hours, we find

90 mph × t = 22 mph × t + 22 mph × 3.5 hours + 110 miles

90 mph × t - 22 mph × t = 22 mph × 3.5 hours + 110 miles

68 mph × t = 77 miles + 110 miles = 187 miles

t = 187 miles/(68 mph) = 11/4 hours = 2.75 hours

The total time it takes Ms. Croft to reach the cruise ship by taking the helicopter = 3.5 + 2.75 = 6.25 hours

Therefore, since it takes less time for Ms. Croft to reach the cruise ship by taking the speedboat, her best choice to retrieve the artifact is to take the speedboat.

Answer:

Step-by-step explanation:

$13

Answer:

x = - 38 & y = 38 or x = 38 & y = -38

Step-by-step explanation:

(E) 12/5.Given that sin(θ) = 12/13 and 0 ≤ θ ≤ 2π, we can find tan(θ) using the trigonometric identity:

tan(θ) = sin(θ) / cos(θ)

To find cos(θ), we can use the Pythagorean identity:

sin^2(θ) + cos^2(θ) = 1

Since sin(θ) = 12/13, we can substitute this value into the equation:

(12/13)^2 + cos^2(θ) = 1

Simplifying:

144/169 + cos^2(θ) = 1
cos^2(θ) = 1 - 144/169
cos^2(θ) = 25/169
cos(θ) = ±5/13

Since 0 ≤ θ ≤ 2π, cos(θ) is positive, so cos(θ) = 5/13.

Now we can calculate tan(θ):

tan(θ) = sin(θ) / cos(θ)
tan(θ) = (12/13) / (5/13)
tan(θ) = 12/5

Therefore, the correct answer is (E) 12/5.

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Answer:

3x + 15 = 3*10 + 15 = 30 + 15 = 45

3x + 15 = 45

Now,

2x + 25 = 2*10 + 25 = 20 + 25 = 45

2x + 25 = 45

Step-by-step explanation:

3x + 15 + 2x + 25 = 90

or, 5x + 40 = 90

or, 5x = 90 - 40

so, 5x = 50

so, x = 50/5 = 10

50 tickets were thus sold at the door. As a result, there were 175 advance sales of tickets and 50 at the door.

A linear equation has the algebraic form y=mx+b. where m is the slope and b is the y-intercept, consisting of a first-order (linear) term and a constant. If x and y are variables, the above is sometimes called a "two-variable linear equation".

Tickets for a high school dance were provided.

Purchases made before the dance cost $4.00 apiece.

If purchased at the door, they would cost $5 apiece.

225 tickets were sold, bringing in $950.

It's time to locate the advance-purchase and door-purchase tickets.

Let the quantity of advance tickets sold equal x.

And the quantity of tickets sold at the door will be equal to y.

hence, the overall quantity of tickets sold

\(x+y = 225\\y = 225 - x\)......(1)

Now,

4x + 5y = 950

\(4x + 5y = 950\\4x + 5(225-x) = 950\\4x + 1125 - 5x = 950\\-x = -175\\x= 175\\y=50\)

50 tickets were thus sold at the door.

As a result, there were 175 advance sales of tickets and 50 at the door.

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