associative analyses cannot determine whether stable relationships exist between two variables. true false

The sentence can be turned to the equation;

15.00r+20.00(r−3)=500.00

We have to read the sentence carefully and identify the quantities or variables involved.

We are told that a  barber offers two options at his barbershop; a $15 regular haircut and a $20 deluxe haircut.

Then  On a certain day the barber gave r regular haircuts and 3 fewer deluxe haircuts than regular haircuts. He earned $500 total from the two types of haircuts.

It then follows that the correct equation is 15.00r+20.00(r−3)=500.00

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Missing parts;

A barber offers two options at his barbershop: a $15.00 regular haircut and a $20.00 deluxe haircut. On a certain day, the barber gave r regular haircuts and 3 fewer deluxe haircuts than regular haircuts. He earned $500.00 total from the two types of haircuts. Which of the following equations best models this situation?

Answer Choices:

A. 15.00r+20.00(r−3)=500.00

B. 15.00r+20.00(r+3)=500.00

C. 15.00(r−3)+20.00r=500.00

D. 15.00(r+3)+20.00r=500.00

Answer:

The esitmated version of 5686 divided by 80 is 5680/80.

Step-by-step explanation:

Both numbers are compatible, and they round correctly.

Thank you hope this helped!

Answer: 2

Step-by-step explanation: Thank you

Answer:

The answer is 2

The correct statement for the function will be Weight is input, height is output.

The function is a relationship between inputs, and all the inputs have an output.

Given that, The weights and heights of six mathematics students are given and the statement, "Height is a function of weight,"

Mathematically, we can write,

f(w) = h, where w = weight and h = height.

We can conclude that, the value of Height is depended on the value of Weight.

Therefore, Weight is input variable and Height is output variable.

Hence, option C is the correct answer.

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The expression is rewritten as the product of two prime factors as 3 × 11.

First, we need to know that PEDMAS represents the different mathematical operations.

They are enumerated as;

From the information given, we have that;

The expression is written as:

3(6+5)

Add the values in the parentheses, we get;

3(11)

Now, note that prime numbers are numbers that are only divisible by themselves and 1 and thus, this makes them factors too.

Prime numbers/factors from 1- 20 are written thus;

1, 3, 5, 7, 11, 13, 17, 19

Then, we have the expression written as:

3 × 11

These factors are prime numbers

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Answer:

1111/2500

Step-by-step explanation:

(a) The probability that all 11 women dislike their mother-in-law is approximately 0.209.

(b) The probability that none of the 11 women dislike their mother-in-law is approximately 0.002.

(c) The probability that at least nine of the 11 women dislike their mother-in-law is approximately 0.995.

(d) The probability that no more than eight of the 11 women dislike their mother-in-law is approximately 0.996.

This problem can be approached using the binomial distribution, which models the number of successes in a fixed number of independent trials with the same probability of success.

Let p be the probability that a randomly chosen married woman dislikes her mother-in-law, based on the sociologists' claim. Then, we have p = 0.8.

(a) To find the probability that all 11 women dislike their mother-in-law, we can use the binomial distribution with n = 11 and p = 0.8:

P(X = 11) = (11 choose 11) × 0.8^11 × 0.2^0 ≈ 0.209

(b) To find the probability that none of the 11 women dislike their mother-in-law, we can use the binomial distribution again

P(X = 0) = (11 choose 0) × 0.8^0 × 0.2^11 ≈ 0.002

(c) To find the probability that at least nine of the 11 women dislike their mother-in-law, we can use the complement rule and find the probability that fewer than nine dislike their mother-in-law

P(X < 9) = P(X = 0) + P(X = 1) + ... + P(X = 8)

Using the binomial distribution for each term, we get

P(X < 9) ≈ 0.005

Therefore, the probability that at least nine of the 11 women dislike their mother-in-law is approximately 1 - 0.005 = 0.995.

(d) To find the probability that no more than eight of the 11 women dislike their mother-in-law, we can again use the binomial distribution and add up the probabilities of X = 0, 1, ..., 8:

P(X ≤ 8) = P(X = 0) + P(X = 1) + ... + P(X = 8)

Using the binomial distribution for each term, we get

P(X ≤ 8) ≈ 0.996

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Answer: 84 square inches.

Step-by-step explanation:

Side A of shaded: 5+3+3 = 11

Side B of shaded: 3+3+3= 9

11x9= 99

99-(3x5{normal rectangle area})= 84

False. Solving a system of linear equations requires solving for multiple variables.

To solve for a single variable, you would only need to solve one equation.

To solve a system of linear equations, you need to use methods such as elimination, substitution, or graphing. For example, consider the system of equations:

3x + y = 7

2x - y = 4

To solve this system, you could use elimination by adding the equations together. This would give you the equation 5x = 11. To solve for x, you would then divide both sides by 5, giving you x = 11/5.

Once you have solved for x, you can substitute this value into either of the original equations to solve for y. In this example, substituting 11/5 for x into the first equation would give you 3(11/5) + y = 7. Simplifying this equation gives you y = -2/5.

Therefore, the solution to this system of linear equations is x = 11/5 and y = -2/5.

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The distance between the provided parallel planes is \(\[15\sqrt{3}\]\)units.

To calculate the distance between the provided parallel planes, we need to determine the perpendicular distance between them.

First, let's write the equations of the planes in the general form Ax + By + Cz + D = 0:

Plane 1: 4x - 2y + z - 16 = 0

Plane 2: 8x - 4y + 2z - 2 = 0

The normal vectors to the planes are the coefficients of x, y, and z.

For Plane 1, the normal vector is N1 = (4, -2, 1).

For Plane 2, the normal vector is N2 = (8, -4, 2).

Since the planes are parallel, the normal vectors are proportional to each other.

We can check this by taking the ratios of corresponding components:

\(\(\frac{{N_1}}{{N_2}} = \left(\frac{{4}}{{8}}, \frac{{-2}}{{-4}}, \frac{{1}}{{2}}\right) = \left(\frac{{1}}{{2}}, \frac{{1}}{{2}}, \frac{{1}}{{2}}\right)\)\)

The ratio is the same for each component, confirming that the planes are parallel.

To obtain the distance between the planes, we can choose a point on one plane and calculate the perpendicular distance to the other plane.

Let's choose a point on Plane 1, for example, by setting y = z = 0 in the equation:

4x - 16 = 0

4x = 16

x = 4

So, a point on Plane 1 is (4, 0, 0).

Now, let's calculate the perpendicular distance from this point to Plane 2 using the formula:

\(\[ \text{Distance} = \left| \frac{{Ax + By + Cz + D}}{{\sqrt{{A^2 + B^2 + C^2}}}} \right| \]\)

For Plane 2, A = 8, B = -4, C = 2, D = -2, and the chosen point is (4, 0, 0):\(\[\text{Distance} = \left|\frac{{8(4) + (-4)(0) + 2(0) - 2}}{{\sqrt{{8^2 + (-4)^2 + 2^2}}}}\right|\]\)

\(\[\begin{aligned}&= \left| \frac{{32 - 2}}{{\sqrt{64 + 16 + 4}}} \right| \\&= \left| \frac{{30}}{{\sqrt{84}}} \right| \\&= \frac{{30}}{{2}} \sqrt{3} \\&= 15 \sqrt{3}\end{aligned}\]\)

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Answer:

70 percent

Step-by-step explanation:

140/200 = 7/10 = 0.7 = 70 percent

Therefore, Drug C has a stronger impact on cell survival compared to Drug A, making it the drug with the greatest effect.

To draw a representation of the survival curve and identify the drug that has the greatest effect on cell survival, we can use a graph where the x-axis represents the drug concentration in μg/ml, and the y-axis represents the percentage of cell survival.

Since Drug B has no IC90 value, it means that it does not reach a concentration that causes a 90% reduction in cell survival. Therefore, we can assume that Drug B has no significant effect on cell survival and can omit it from the survival curve.

For Drug A and Drug C, we have IC90 values of 5 and 3 μg/ml, respectively. This means that when the drug concentration reaches these values, there is a 90% reduction in cell survival.

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Answer:

3 3/5 + 1 1/4 = 4 17/20

7/8 + 1/12 = 23/24

8/9 - 2/5 = 22/45

5 1/4 - 2 2/3 = 2 7/12

Step-by-step explanation:

3 3/5 + 1 1/4

First convert into improper fractions

= 18/5 + 5/4

Now find the common denominator

72/20 + 25/20 =

97/20

Now simplify

4 17/20

Next problem:

7/8 + 1/12

find the common denominator

21/24 + 2/24 =

23/24

Next problem:

8/9 - 2/5

find the common denominator

40/45 - 18/45 =

22/45

Next problem:

5 1/4 - 2 2/3

First convert into improper fractions

21/4 - 8/3

find the common denominator

63/12 - 32/12 =

31/12

Now simplify

2 7/12

Answer:

By comparing both the figures there is a difference of 6

\(x + 1 = 24 - 6 \\ x = 24 - 6 - 1 \\ x = 17\)

Answer:

if x was 3... itd be 2

Step-by-st/ep explanation:

Evaluate for x=3

1+

√3

1

−√3+1−

√3

1

+√3

1+

√3

1

−√3+1−

√3

1

+√3

=2

Answer:

To find out how much area he will paint, you will find the area of all 6 faces.

Each face is in the shape of a rectangle, so use A = lw as your formula.

Front/Back:  80 x 36 = 2880 square inches

                   2880 square inches x 2 = 5760 square inches

Right/Left Sides:  80 x 2 = 160 square inches

                          160 square inches x 2 = 320 square inches

Top/Bottom:   36 x 2 = 72 square inches

                    72 square inches x 2 = 144 square inches

5760 + 320 + 144 = 6224 square inches.

Cody will paint 6224 square inches.

Hope this helps!

The χ2 test is not the oldest statistical test still in use. While it is an important and widely used statistical test, it is not the oldest. The χ2 test, also known as the chi-squared test, was developed by Karl Pearson in the late 19th century. It is used to determine whether there is a significant association between two categorical variables.

The χ2 test is a statistical test used to analyze categorical data. It is based on the principle of comparing observed frequencies in a contingency table to the expected frequencies. The test evaluates whether there is a significant association between two categorical variables or if any observed deviations are due to chance.

The χ2 test is commonly used in various fields such as biology, social sciences, market research, and quality control. It can be applied to analyze survey responses, compare proportions between groups, examine the relationship between variables, and assess the goodness of fit of a theoretical distribution to observed data.

However, the claim that the χ2 test is the oldest statistical test still in use is not accurate. There are several other statistical tests that predate the χ2 test, such as the t-test, developed by William Sealy Gosset (aka "Student") in the early 20th century, and the correlation coefficient, developed by Francis Galton in the late 19th century. These tests and others have been instrumental in the development of statistics and continue to be widely used today alongside the χ2 tes.

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The length οf οne side οf the cube is 4 cm.

In geοmetry, a cube is a three-dimensiοnal sοlid shape that has six square faces οf equal size, and all its angles are right angles (90 degrees). A cube is a regular pοlyhedrοn, which means that all its faces are cοngruent (i.e., identical) regular pοlygοns and its edges have the same length.

The surface area οf a cube with edge length "s" is given by the fοrmula:

\(SA = 6s^{2}\)

We are given that the surface area οf the cube is \(96 cm^2\). Therefοre, we can set up the equatiοn:

\(96 = 6s^{2}\)

Dividing bοth sides by 6, we get:

\(16 = s^{2}\)

Taking the square rοοt οf bοth sides, we get:

s = 4

Therefοre, the length οf οne side οf the cube is 4 cm.

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Answer:

(negative) quadratic function

Step-by-step explanation:

Quadratic function:  polynomial function of degree 2, represented graphically by a parabola.

Standard form of a quadratic function: \(f(x)=ax^2+bx+c\)

If the leading coefficient (\(a\)) is positive, the parabola opens upwards (U-shaped)

If the leading coefficient (\(a\)) is negative, the parabola opens downwards (∩-shaped)

The value of set of side lengths can be used to construct a triangle are,

⇒ 3, 5, 7

We have to given that;

To find the set of side lengths can be used to construct a triangle.

Now, We know that;

The sum of two side of a triangle is always greater than third side.

Hence, We can check all options as;

⇒ 3, 4, 9

Since, 3 + 4 = 7 < 9

Hence, It does not form a triangle.

⇒ 3, 5, 7

Since, 3 + 5 = 8 > 7

Hence, It form a triangle.

⇒ 3,5, 8

Since, 3 + 5 = 8 = 8

Hence, It does not form a triangle.

⇒ 2, 6, 8

Since, 2 + 6 = 8 = 8

Hence, It does not form a triangle.

Thus, The value of set of side lengths can be used to construct a triangle are,

⇒ 3, 5, 7

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Answer:

It is the distribution of the statistic if we were to draw all possible samples of a given size from the population and calculate the statistic for each sample.

Step-by-step explanation:

The sampling distribution of a statistic refers to the range of all possible sample values of the statistic that could be drawn from the parent population under the specified sampling plan.

In other words, it is the distribution of the statistic if we were to draw all possible samples of a given size from the population and calculate the statistic for each sample.

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11. Angle: ∠HEJ  Measure: 25°

(or Angle: ∠JEK  Measure: 50°)

12. Angle: ∠DEK  Measure: 140°

(or Angle: ∠FEH  Measure: 115°)

13. ∠JED or ∠JEF

14. ∠DEF

To find out how far Jacky walks every day, we need to divide the total distance he walks every week (220 1/2 m) by the number of days he walks.

Assuming he walks every day, there are 7 days in a week. So,

220 1/2 m ÷ 7 = 31 1/2 m

Therefore, Jacky walks 31 1/2 meters every day.

The correct statements regarding the pth percentile of a continuous random variable are: the area under the curve to the left of the pth percentile is equal to p, and the area under the curve to the right of the pth percentile is equal to (1-p).

In general, when considering the pth percentile of a continuous random variable, the following statements are always true:

1. The area under the curve to the left of the pth percentile is equal to p: This statement is correct. The pth percentile is the value below which p percent of the data falls. Therefore, the area under the curve to the left of the pth percentile represents p percent of the total area.

2. The area under the curve to the right of the pth percentile is equal to (1-p): This statement is also correct. Since the total area under the curve is equal to 1, the remaining area to the right of the pth percentile is (1 - p).

3. The pth percentile is positive: This statement is not necessarily true. The pth percentile can be positive, zero, or negative depending on the distribution of the random variable. It is possible for a significant portion of the data to fall below zero, resulting in a negative pth percentile.

Therefore, the correct statements are:

- The area under the curve to the left of the pth percentile is equal to p.

- The area under the curve to the right of the pth percentile is equal to (1-p).

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The sale price of the item is $32.

Among the options provided, the correct answer is d. $32.

To calculate the sale price of the item, we need to subtract the discount amount from the original price.

The discount amount is 20% of the original price, which is calculated by multiplying the original price by 20% or 0.20.

So, the discount amount is 0.20 \(\times\) $40 = $8.

To find the sale price, we subtract the discount amount from the original price:

$40 - $8 = $32.

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Answer:

Step-by-step explanation:

for the first row its 28 bc its going down by 4

the second row is -7 bc its going down by 1 each time

i hope it helps!!

have a great day!

The length CT of the line segment is 38 units

From the question, we have the following parameters

CJ = 9x + 1

JT = 2x + 15

Also, we understand that:

Point J is the midpoint of segment CT.

This means that

CJ = CT

So, we have

9x + 1 = 2x + 15

Evaluate the like terms

7x = 14

So, we have

x = 2

Length CT is calculated as

CT = 9x + 1 + 2x + 15

So, we have

CT = 9 x 2 + 1 + 2 x 2 + 15

Evaluate

CT = 38

Hence, the length is 38 units

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Answer:

100

Step-by-step explanation:

6 seconds to select + 14 seconds to complete check out

to complete transaction order of 5 products equal 100 second

Answer:

false

Step-by-step explanation: the diameter has to be double the amount of the radius

Answer:

false

Step-by-step explanation:

r=d\2

12=d\2

24=d

d=24