PLEASE HELP, WILL MARK BRAINLY!!

3. Twice the difference of a number and three is the sum of that number and four.

4. Three times a number is two times the difference of that number and one.

The plant is not in the sprinkler's range since the distance between the sprinkler and the plant is greater than the radius of the sprinkler's range.

The distance between the sprinkler and the plant can be calculated using the Pythagorean theorem, which states that in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides.

In this case, the distance between the sprinkler and the plant is the hypotenuse of a right triangle with legs of length 4 feet and 6 feet:

distance = sqrt(4^2 + 6^2)

distance = sqrt(16 + 36)

distance = sqrt(52)

distance ≈ 7.21 feet

Since the distance between the sprinkler and the plant is greater than the radius of the sprinkler's range (8 feet), the plant is not in the sprinkler's range. Therefore, the plant will not receive water from the sprinkler.

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the fraction that rounds to 5 is option B, 5 1/2.

What is a fraction?

If the numerator is bigger, it is referred to as an improper fraction and can also be expressed as a mixed number, which is a whole-number quotient with a proper-fraction remainder.

Any fraction can be expressed in decimal form by dividing it by its denominator. One or more digits may continue to repeat indefinitely or the result may come to a stop at some point.

To round a fraction to 5, we need to find the fraction that is closest to 5. Therefore, we need to look at the fractional parts of each option and find which one is closest to 1/2.

A. 5 2/3 = 17/3, which is closer to 6 than to 5.

B. 5 1/2 = 11/2, which is exactly halfway between 5 and 6, so it rounds to 5.

C. 5 9/20 = 259/20, which is closer to 6 than to 5.

D. 4 9/20 = 209/50, which is closer to 4 than to 5.

Therefore, the fraction that rounds to 5 is option B, 5 1/2.

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The domain of the function 8 - [tex](x-3)^{2}[/tex] is R which is all the real numbers.

What is domain of a function?

The set or grouping of all potential values that may be used in the function is known as the domain.

We are given a function as 8 - [tex](x-3)^{2}[/tex].

Now, in order to find the domain, we need to find the values where the function is not defined for a value of x.

But, there is no such value for x where the function is not defined.

This means that all values of x give an output.

So, the domain is the set of all the real numbers.

Hence, the domain of the given function is R.

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Answer: 1/3

Step-by-step explanation:

1/3x1/3x1/3=1/27

The two triangles are congruent based on the ASA Congruence Postulate.

The ASA Congruence Postulate states that if two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.

The image shown above shows two triangles that has three pairs of congruent triangles and a pair of corresponding congruent sides.

Therefore, both triangles are congruent by the ASA Congruence Postulate.

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Answer: 1 is .4

2. is .6

3 is .5

4 is .375

5 is .18

6 is .71

7 is .16

8 is .66 repeating

9 is .91

and 10 is .25

Step-by-step explanation:

to get all these and fractions to decimals in the future just divide the numerator by the denominator in other words the top number by the bottom number

1): 0.4

2): 0.67 or 0.7

3): 0.5

4): 0.37 or 0.4

5): 0.18

6): 0.42 or 0.5

7): 0.17

8): 0.7

9): 0.97 or 1

10): 0.25

Answer:

Table D represents the linear function

y = x + 1.

Positive divisors does n2 have are 5.

If an integer n has exactly three positive divisors, including 1 and n, it means that n is a perfect square of a prime number.

The reason for this is that a prime number has only two divisors: 1 and itself. Therefore, if n has exactly three positive divisors, n must be a perfect square of a prime number, since the only divisors of a perfect square are the divisors of its square root, and its square root must be a prime number.

Let's say that n is equal to p², where p is a prime number. The positive divisors of n are 1, p, and n (which is p²).

Now, to find the number of positive divisors of n², we can use the fact that any positive divisor of n² can be expressed in the form [tex]p^k[/tex], where 0 ≤ k ≤ 4 (since n² = p⁴).

Therefore, the positive divisors of n² are:

1, p, p², p³, and p⁴ (which is n²)

So, n² has 5 positive divisors: 1, p, p², p³, and n².

Hence, the answer is 5.

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A statistician would reply that in order to determine if the generic drug is less effective than the name-brand drug, a hypothesis test needs to be conducted.

The null hypothesis (H0) would be that there is no difference in the average blood pressure reduction between the two drugs, while the alternative hypothesis (H1) would be that the name-brand drug has a higher average reduction in blood pressure than the generic drug.

To test these hypotheses, a t-test would be appropriate since we have two independent samples (control and treatment groups) with known means, standard deviations, and sample sizes. The t-test will provide a p-value, which can be compared to a chosen significance level (e.g., α = 0.05).

If the p-value is less than the significance level, we reject the null hypothesis and conclude that there is a significant difference in the average blood pressure reduction between the two drugs. If the p-value is greater than the significance level, we fail to reject the null hypothesis, meaning we do not have enough evidence to claim that the name-brand drug is more effective than the generic drug.

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The two null hypothesis that are correct answer are two-sample t-test and one-sample t-test.

Among the group of answer choices provided, the tests that require calculating degrees of freedom are the two-sample t-test and the one-sample t-test. Both of these tests belong to the t-test family and involve using degrees of freedom to determine the critical t-value.

In summary:
- Null hypothesis: The assumption that there is no significant difference between the sample and population or between two samples.
- T-test: A statistical test used to determine if there is a significant difference between the means of two groups or between a sample and population mean.
- Degrees of freedom: A value used in statistical tests that represents the number of independent values in a data set, which can affect the outcome of the test.

So answer is: two-sample t-test and one-sample t-test.

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The null hypothesis statistical tests that require calculating degrees of freedom are the two-sample t-test and the one-

sample t-test. The degrees of freedom are necessary to calculate the t-value for these tests. The chi-squared test also

requires degrees of freedom, but it is not a test for a null hypothesis.

The correct answer is: all of the above.

All these tests require calculating degrees of freedom:

1. Two-sample t-test:

Degrees of freedom are calculated using the formula (n1 + n2) - 2, where n1 and n2 are the sample sizes of the two

groups being compared.
2. Chi-squared test:

Degrees of freedom are calculated using the formula (rows - 1) * (columns - 1), where rows and columns represent the

number of categories in the data.
3. One-sample t-test:

Degrees of freedom are calculated using the formula n - 1, where n is the sample size.

The null hypothesis statistical tests that require calculating degrees of freedom are the two-sample t-test and the one-

sample t-test. The degrees of freedom are necessary to calculate the t-value for these tests. The chi-squared test also

requires degrees of freedom, but it is not a test for a null hypothesis.

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The total length of all 10 ribbons is 35 inches when they are placed end to end.

Inches are a unit of length in the imperial system of measurement, which is primarily used in the United States, the United Kingdom, and some other countries. One inch is equal to 1/12 of a foot or 2.54 centimeters.

The inch is commonly used to measure the length or distance of small objects, such as the size of a computer screen, the length of a pencil, or the height of a person. Inches are also used to measure the dimensions of larger objects, such as the width of a door or the size of a piece of furniture.

If John has 10 ribbons, each measuring 3 ½ inches long, we can find the total length of all the ribbons by multiplying the length of one ribbon by the number of ribbons:

Total length = 10 × 3 ½ inches

To multiply a whole number and a mixed number, we can first convert the mixed number to an improper fraction, then multiply:

Total length = 10 × (7/2) inches

Total length = 35 inches

Therefore, the 10 ribbons, placed end to end, would be 35 inches long.

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The height of the parabolic balloon arch for the prom is 12.25 feet.

Using these assumptions, we can find the equation of the parabola that the arch follows as x = a(y-k)² + h, where (h,k) is the vertex and a is a constant that determines the shape of the parabola. We can find the value of a by using one of the points that the arch passes through, say (3,0):

3 = a(0-k)² + h h = 3 - a(k²)

Similarly, using the other point that the arch passes through, say (7,0):

7 = a(0-k)² + h h = 7 - a(k²)

Equating the expressions for h, we get:

3 - a(k²) = 7 - a(k²) a = -1/4

Substituting this value of a into one of the equations for h, say h = 7 - a(k²), we get:

h = 7 + 1/4(k²)

So the vertex of the parabola is at (h,k) = (7,0), and the equation of the parabola is x = -1/4(y² - 28y + 49).

To find the height of the arch, we need to find the y-coordinate of the vertex, which is k = 0. So the height of the arch is given by the distance between the vertex and the lowest point of the arch, which is the x-intercept of the parabola. To find the x-intercept, we set y = 0 in the equation of the parabola:

x = -1/4(0² - 28(0) + 49)

x = -1/4(49) = -12.25

However, since we are dealing with a physical object, the height cannot be negative. Therefore, we take the absolute value of the x-intercept, which gives us:

| -12.25 | = 12.25 feet

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Sharon's desired percentile rank of 0.78.

To determine the goal Sharon set for herself, we need to understand the relationship between standardized scores and percentile ranks.

In a standardized test, such as Sharon's Statistics final, the standardized score represents how well a student performed relative to the average score of the test-takers.

The percentile rank, on the other hand, indicates the percentage of test-takers that scored below a particular student.

In Sharon's case, she wants her standardized score to be equal to her percentile rank.

Therefore, her goal is to achieve a standardized score of 0.78 (written as a decimal) on her Statistics final.

This means she aims to score better than approximately 78% of her classmates, as indicated by her desired percentile rank of 0.78.

Hence her desired percentile rank of 0.78.

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The perimeter of the rectangular mural after increasing the dimensions by Hailey is equal to 7826 centimeters.

Measures of rectangular mural are,

length = 890 centimeters

Width = 2891 centimeters

New mural is 66 centimeters longer.

The new dimensions of the  rectangular mural will be,

New  length = 890 cm + 66 cm

                     = 956 cm

New width = 2891 cm + 66 cm

                  = 2957 cm

The perimeter of the new mural can be calculated by adding up the lengths of all four sides,

Perimeter = 2(length + width)

⇒Perimeter = 2(956 cm + 2957 cm)

⇒Perimeter = 2(3913 cm)

⇒ Perimeter = 7826 cm

Therefore, the perimeter of Hailey's new mural will be 7826 centimeters.

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The above question is incomplete , the complete question is:

A rectangular mural measures 890 centimeters by 2891centimeters. Hailey creates a new mural that is 66 centimeters longer. What's is the perimeter of Hailey new mural?

The situation can be represented by the equation 2x + 150 = 5x is"Mary has 2 stamps and buys 150 stamps each week. Nick has no stamps and buys 5 stamps each week. When will they have the same number of stamps?" (option b)

The equation 2x + 150 = 5x means that two expressions, 2x + 150 and 5x, are equal. In other words, whatever value we substitute for x, these two expressions will always have the same value. We can use this equation to solve different situations by finding the value of x that satisfies the equation.

Mary starts with 2 stamps and buys 150 stamps each week, while Nick starts with no stamps and buys 5 stamps each week. To determine when they will have the same number of stamps, we need to use the equation 2x + 150 = 5x. We can rewrite the equation as 150 = 3x, and solve for x by dividing both sides by 3. This gives us x = 50, which means that it will take Mary 50 weeks to have the same number of stamps as Nick.

Hence the correct option is (b).

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The equation for the sinusoidal function that represents Jane's motion would be d(t) = 25 x sin(π/4 x (t + 4)) - 5

Let d(t) be the distance Jane is from the bank (in feet) at time t (in seconds). Since Jane's motion is sinusoidal, we can express it as:

d(t) = A x sin(B x (t - C)) + D

We need to find the values of A, B, C, and D that satisfy these conditions.

Since the amplitude is half the peak-to-peak amplitude, we have:

A = 50 / 2 = 25

The vertical shift (D) is the average of the maximum and minimum distances:

D = (20 + (-30)) / 2 = -10 / 2 = -5

Since the sine function is -1 at 3π/2 (270 degrees), we have:

π/4 x (2 - C) = 3π/2

2 - C = 6

C = -4

So, the equation of the sinusoidal function representing Jane's motion is:

d(t) = 25 x sin(π/4 x (t + 4)) - 5

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The question is:

Find the sinusoidal function that represents Jane's motion.

The value of x in the Intersecting chords is 15

From the question, we have the following parameters that can be used in our computation:

Intersecting chords

The value of x is then calculated as

x = 1/2(30 - 2x + 30)

So, we have

2x = 30 - 2x + 30

Evaluate the like terms

4x = 60

Divide

x = 15

Hence, the value of x is 15

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Answer:

565.486677646 inches squared

Step-by-step explanation:

Let's recall the formula for the surface area of a cylinder:

[tex]A=2\pi rh+2\pi r^2[/tex]

Where r is the radius and h is the height.

We are given that the radius is 6 inches and the height is 9 inches.

Substitute the values and solve the equation, like so:

[tex]A=2\pi (6)(9)+2\pi (6)^2=\\A=2\pi (54) +2\pi(36)=\\A=108\pi +72\pi =\\A=180\pi[/tex]

Thus, in terms of pi, the surface area is equal to [tex]180\pi[/tex].

180 times pi is equal to approximately 565.486677646 inches squared.

The only option that represents an independent event is: Option C: "Spinning a Spinner with eight evenly spaced sections, then spinning it again.".

Independent events are defined as those events whose occurrence is not dependent on any other event. For example, if we flip a coin in the air and get the outcome as Head, then again if we flip the coin but this time we get the outcome as Tail. In both cases, the occurrence of both events is independent of each other.

Looking at the given options, the only one that represents an independent event is "Spinning a Spinner with eight evenly spaced sections, then spinning it again.".

This is because each event does not depend on another one of the events being described.

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The area of the intersection of the sphere and the plane in sq cm is 286.46 square centimeters.

The sphere is divided into two equal halves by the plane. The closest point on the plane is 3 cm away from the sphere's center. As a result, a right triangle is formed, with one leg equal to the sphere's radius and the other to the sphere's radius from the plane.

We may calculate the radius of the sphere using the Pythagorean theorem:

r^2 = (20/2)^2 - 3^2

r = sqrt(91) 9.54 cm and r2 = 91

A circle with a radius of 9.54 cm forms the point where the sphere and the plane cross. Its area is therefore: A = r2 A = (9.54)2 A 286.46 sq cm.

The sphere and plane's intersection therefore has a surface area of about 286.46 square centimeters.

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The type of variable for,

a. The number of counties in California: Quantitative discrete.

b. The stages of childhood: Qualitative ordinal.

c. In the scenario above, 23 minutes is a statistic, because 28 students is a sample.

d. Between 6 minutes and 8 minutes: Approximately 68% of the athlete's mile times are expected to be between 6 and 8 minutes, according to the empirical rule.

e. Between 4 minutes and 7 minutes: Approximately 68% of the athlete's mile times are expected to be between 4 and 10 minutes, according to the empirical rule.

f. Less than 9 minutes: Approximately 84% of the athlete's mile times are expected to be less than 9 minutes, according to the empirical rule.

In statistics, variables can be categorized into two types: qualitative and quantitative.

Qualitative variables describe characteristics or qualities that cannot be measured numerically, such as gender or hair color.

Quantitative variables, on the other hand, represent numerical values that can be measured or counted.

There are two types of quantitative variables: continuous and discrete. Continuous variables can take any numerical value within a range, such as age or weight.

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The combined amount in both accounts after 10 years is $16,869.58

To solve the problem, we need to use the following formulas:

Simple Interest = Principal x Rate x Time

Compound Interest = [tex]Principal * (1 + Rate/ n)^{n * Time}[/tex]

where:

Principal = the initial deposit

Rate = the interest rate (in decimal form)

Time = the number of years

n = the number of times interest is compounded per year

For Account 1:

Simple Interest = Principal x Rate x Time

= $6000 x 0.035 x 10

= $2100

The amount in Account 1 after 10 years will be the initial deposit plus the interest earned:

= $6000 + $2100

= $8100

For Account 2:

Since the interest is compounded annually, n = 1.

Compound Interest = [tex]Principal * (1 + Rate/ n)^{n * Time}[/tex]

= [tex]6000 *(1 + 0.035/1)^{1 * 10}\\= $6000 (1.035)^{10}\\= $8769.58[/tex]

After ten years, the amount in Account 2 will be $8769.58.

After ten years, the combined amount in both accounts will be:

$8100 minus $8769.58 equals $16869.58, resulting in a total of $16,869.58 in both accounts after ten years.

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We can use the formula for inverse variation, which states that the product of the time and the speed is constant:

time × speed = constant

Let's use t to represent the time needed to travel the distance at 54 miles per hour. We know that the time is 10 hours when the speed is 24 miles per hour. So we can set up the equation:

10 × 24 = t × 54

Simplifying, we get:

240 = 54t

Dividing both sides by 54, we get:

t = 240/54

Simplifying this fraction, we get:

t = 40/9

So it will take approximately 4.44 hours, or 4 hours and 26 minutes, to travel the same distance at 54 miles per hour.

The tent occupies 640 cubic feet of space.

Volume is a measurement of the amount of three-dimensional space occupied by an object or substance. It is the measure of the amount of space that an object or substance occupies in three dimensions, typically expressed in cubic units such as cubic meters, cubic centimeters, or cubic feet.

For example, the volume of a cube can be calculated by multiplying its length by its width by its height (or side cubed):

V = l x w x h = [tex]s^3[/tex],

where V is the volume, l is the length, w is the width, h is the height, and s is the length of a side.

Volume is an important measurement in fields such as physics, engineering, architecture, and chemistry, where it is used to calculate quantities such as the amount of fluid that can be held by a container, the amount of material needed to construct a building, or the amount of a substance that can react with another substance in a chemical reaction.

The volume of the tent can be found by calculating the volume of the square pyramid and then adding the volume of the rectangular box formed by the tent's base.

The base of the tent is an 8-ft by 8-ft square, so its area is 8 x 8 = 64 square feet. The height of the pyramid is 3 ft, so its volume is:

V(pyramid) = (1/3) x base area x height

V(pyramid) = (1/3) x 64 x 3

V(pyramid) = 64 cubic feet

The rectangular box formed by the tent's base has dimensions of 8 ft by 8 ft by 9 ft, so its volume is:

V(box) = length x width x height

V(box) = 8 x 8 x 9

V(box) = 576 cubic feet

Therefore, the total volume of space the tent occupies is:

V(total) = V(pyramid) + V(box)

V(total) = 64 + 576

V(total) = 640 cubic feet

So the tent occupies 640 cubic feet of space.

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Note that the function that is graphed below is y = x + 7.

The equation y = x + 7 represents a linear function, where x is the independent variable and y is the dependent variable.

It has a slope of 1, which means that for every unit increase in x, y increases by 1. The y-intercept is 7, which is the value of y when x is zero. This equation can be graphed as a straight line on a coordinate plane, with a positive slope and y-intercept of (0, 7).

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The dimension for the largest area is 181 sq ft.

The rectangle has width. [tex]$w$[/tex] and height [tex]$h$[/tex],and let the radius of the semicircle be [tex]$r$[/tex]. We want to maximize the area [tex]$A$[/tex] of the window, which is given by:

[tex]A= 21 \pi r 2 +wh[/tex]

We also have the constraint that the total length of framing material is 12 feet:

[tex]2r+2w+h=12[/tex]

Solving this equation for [tex]$h$[/tex] we get:

[tex]h=12-2r-2w[/tex]

Substituting this expression for [tex]$h$[/tex] into the equation for [tex]$A$[/tex], we get:

[tex]A= 21 \pi r ^2+w(12-2r-2w)[/tex]

Expanding this expression, we get:

[tex]A= 21\pi r^2 +12w-2rw-2w^2[/tex]

To find the values of [tex]$r$[/tex], [tex]$w$[/tex], and [tex]$h$[/tex] that maximize[tex]$A$[/tex], we take the partial derivatives of [tex]$A$[/tex] with respect to each variable, set them equal to zero, and solve for the variables.

We get:

[tex]\partial r/\partial A=\pi r-2w=0 \Rightarrow r= 2w/\pi[/tex]

[tex]\partial w/\partial A=12-2r-4w=0 \Rightarroww= (6-r)/2= (6-2w/\pi)/2=3- w/\pi[/tex]

Substituting the expression for [tex]$w$[/tex] into the equation for [tex]$r$[/tex], we get:

[tex]r= 2/\pi (3-w/\pi )= 6/\pi - 2/\pi^2w[/tex]

Substituting these expressions for [tex]$r$[/tex] and [tex]$w$[/tex] into the equation for [tex]$h$[/tex], we get:

[tex]h=12-2r-2w=12- (4/\pi)w[/tex]

So the dimensions that maximize the area are:

[tex]w= \pi/2,r= 3\pi /4 ,h= (48-8\pi) / \pi[/tex]

The area of the window is:

[tex]A= (1/2)\pir^2 +wh= (1/2)\pi ( 3\pi/4)^2 + (\pi/2)\cdot (48-8\pi)/\pi = 9\pi/8+24-4\pi\approx 18.1 sq ft[/tex]

​

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Therefore, the dimensions of the largest area rectangular window with a semicircle top that can be made with 12' of framing material are approximately 1.55' * 3.38'. The maximum area is: Area = 4.82 square feet.

To find the dimensions for the largest area of a rectangular window with a semicircle top using 12' of framing material, we need to use optimization techniques.

Let's denote the width of the rectangular window as "w" and the height of the rectangular portion as "h". We also know that the semicircle top will have a radius equal to the width of the rectangular portion, so its diameter will be 2w.

The perimeter of the window is given by:

Perimeter = 2w + h +[tex]\pi w[/tex]

Since we have 12' of framing material available, we can write:

2w + h + [tex]\pi w[/tex] = 12

We can rearrange this equation to solve for h:

h = 12 - 2w - [tex]\pi w[/tex]

The area of the window is given by:

Area = w * h + 1/2 * [tex]\pi w^2[/tex]

Substituting the expression for h from the perimeter equation, we get:

Area = w(12 - 2w - [tex]\pi w[/tex]) + 1/2 * [tex]\pi w^2[/tex]

Expanding and simplifying, we get:

Area = 12w - [tex]2\pi w^2[/tex] - [tex]w^2[/tex]

To find the dimensions that maximize the area, we need to take the derivative of the area equation with respect to w and set it equal to zero:

d(Area)/dw = 12 - [tex]4\pi w[/tex] - 2w = 0

Solving for w, we get:

w = 12/(4\pi+2) ≈ 1.55'

Substituting this value back into the perimeter equation, we can find the height:

h = 12 - 2w - \piw ≈ 3.38'

Therefore, the dimensions of the largest area rectangular window with a semicircle top that can be made with 12' of framing material are approximately 1.55' * 3.38'. The maximum area is:

Area ≈ 4.82 square feet.

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The drive-thru with typically more wait time is Burger Quick, because it has a larger median. The Option A.

The median is a measure of central tendency that represents the middle value of a set of data. In this case, the median wait time at Burger Quick is 15.5 minutes, while the median wait time at Super Fast Food is 12 minutes.

This indicates that, on average, customers at Burger Quick experience a longer wait time compared to customers at Super Fast Food. The larger median at Burger Quick suggests that there may be some longer wait times skewing the data towards the higher end which could be due to various factors such as slower service, or other operational issues at Burger Quick resulting in a longer wait time for customers at their drive-thru.

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Answer: The distance formula between two points (x1, y1) and (x2, y2) is:

d = sqrt((x2 - x1)^2 + (y2 - y1)^2)

Using this formula, we can find the distance between (7, -2) and (-1, -1):

d = sqrt((-1 - 7)^2 + (-1 - (-2))^2)

= sqrt((-8)^2 + (1)^2)

= sqrt(64 + 1)

= sqrt(65)

Therefore, the distance between (7, -2) and (-1, -1) is sqrt(65), or approximately 8.06 units.

Step-by-step explanation:

The two options that represent circles with diameter 12 units and center on the y-axis are:

x² + (y - 6)² = 36

x² + (y + 6)² = 36

The diameter of a circle is a straight line segment that passes through the center of the circle and connects two points on its circumference. It is twice the length of the circle's radius.

The equations that represent circles that have a diameter of 12 units and a center that lies on the y-axis are:

x² + (y - 6)² = 36

x² + (y + 6)² = 36

Explanation:

For a circle with diameter 12 units, the radius is half of the diameter, which is 6 units.

Since the center of the circle lies on the y-axis, the x-coordinate of the center is 0.

The general equation for a circle with center (h, k) and radius r is (x - h)² + (y - k)² = r².

Using the given information, we substitute h = 0, k = ±6, and r = 6 to get the two equations:

(x - 0)² + (y - 6)² = 6² => x² + (y - 6)² = 36

(x - 0)² + (y + 6)² = 6² => x² + (y + 6)² = 36

Therefore, the two options that represent circles with diameter 12 units and center on the y-axis are:

x² + (y - 6)² = 36

x² + (y + 6)² = 36

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