soo how i do this its hard to simplify it

Answer:

$16.40 tip

Step-by-step explanation:

82 * .20 = 16.40

The negative correlation coefficient of -0.73 between consumption of vitamin A and the cancer rate of a particular type of cancer suggests that as vitamin A consumption increases, the cancer rate tends to decrease.

A correlation coefficient measures the strength and direction of the linear relationship between two variables.

In this case, a correlation coefficient of -0.73 indicates a negative correlation between consumption of vitamin A and the cancer rate.

Interpreting this correlation, it can be inferred that there is an inverse relationship between the two variables. As consumption of vitamin A increases, the cancer rate tends to decrease.

However, it is important to note that correlation does not imply causation.

It would be incorrect to conclude that consuming more vitamin A causes this type of cancer. Correlation does not provide information about the direction of causality.

Other factors and confounding variables may be involved in the relationship between vitamin A consumption and cancer rate.

To establish a causal relationship, further research, such as experimental studies or controlled trials, would be necessary. These types of studies can help determine whether there is a causal link between vitamin A consumption and the occurrence of this particular cancer.

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Using Venn probabilities, it is found that there is a 0.03 = 3% probability of a chain defect.

In a Venn probability, two non-independent events are related to each other, as are their probabilities.

The "or probability" is given by:

\(\rm P(A \cup B ) = P(A)+P(B)-P(A\cap B)\)

In this problem, the events are:

Event A: Brake defect.

Event B: Chain defect.

For the probabilities, we have that:

Substitute all the values in the formula

\(\rm P(A \cup B ) = P(A)+P(B)-P(A\cap B)\\\\0.06=0.04+P(B)-0.01\\\\P(B)=0.06-0.04+0.01\\\\ P(B)=0.03\)

0.03 = 3% probability of a chain defect.

Hence, there is a 0.03 = 3% probability of a chain defect.

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Answer:

D

Step-by-step explanation:

The equation of the each of the lines in slope-intercept form are:

5. y = -1/3x + 3.

6. y = 2x - 2

7. y = -8/3x + 4.

8. y = -2x + 1.

The slope-intercept form of a line is y = mx + b, where m is the slope of the line and b is the y-intercept.

5. Slope (m) = rise/run = -1/3

y-intercept (b) = 3

The equation is: y = -1/3x + 3.

6. Slope (m) = rise/run = 2/1 = 2

y-intercept (b) = -2

The equation is: y = 2x - 2

7. Slope (m) = rise/run = -8/3

y-intercept (b) = 4

The equation is: y = -8/3x + 4.

8. Slope (m) = rise/run = -2/1 = -2

y-intercept (b) = 1

The equation is: y = -2x + 1.

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Answer:

Eli=180 Freda=260 and Geoff=360

Answer:

Answer:

$5,600

Step-by-step explanation:

1. divide 200 by 2 (this gives you the rate for 1 hour of book sales)

2. multiply the answer by 8 hours

3. multiply your answer (800) by $7

4. You solved it! $5,600 is how much money a company would earn if they sold books for 8 hours.

Answer:

Step-by-step explanation:

Step 1

Find how much books the company sells in 8 hours of selling books

To find this, we see that 2 hours = 200 books. Also, 8/2=4. That means that if we multiply 200 by 4, then we will get our total amount of books sold in 8 hours.

200x4=800

800 books sold in 8 hours

Step 2

Find how much money does 800 books equal to get FINAL ANSWER

To find this, we need to know the price of 1 book, the price of one book is 7$, that means that if we do 7$x800books, then we get our FINAL ANSWER

7x800=$5,600

Part B: 65

Part A: Since there are 30 students of the class and 17 are boys, there are 13 girls. 13/30 = 43.33 = 43%.

Part B: Since 43% of the class are girls, we do 150*0.43 for the whole 7th grade which is 64.5 which I rounded to 65.

Answer:0.46

Step-by-step explanation:

Answer:

see explanation

Step-by-step explanation:

The n th term of a geometric sequence is

= a

where a is the first term and r the common ratio

Both a and r have to be found

Given a₃ = - 2, then

ar² = - 2 → (1)

Given a₇ = - 32, then

a = - 32 → (2)

Divide (2) by (1)

= , that is

= 16 ( take the fourth root of both sides )

r = 2 ← common ratio

Substitute r = 2 into (1)

a × 2² = - 2, that is

4a = - 2 ( divide both sides by 4 )

a = -  ← first term

Hence

= -  ← explicit formula

and

= -  ×  = - 0.5 × 512 = - 256

Step-by-step explanation:

Attached above is the graph of the line passing through the points (2, -6) and (-1,9).

How to plot the graph:

Firstly, we need to locate the first point (2,-6)

That means a point 2 on the x axis and -6 on the y-axis.

Then, next locate the second point (-1,9)

That means a point -1 on the x axis and 9 on the y-axis.

Then lastly, join the two points.

The dimension of the Dumpster are 2.18 x 4.37 x 2.93 yards.

Let us assume that the breadth of the dumpster is X yards.

So, it is given that the length of the dumpster will be 2X.

Let us say the height f the dumpster is H.

Hence,

The total surface area of the dumpster = 2(X.2X + XH + 2XH)

Total surface area = 4X²+6XH

The volume of the cuboidal dumpster = X.2X.H

Volume = 28 yards³

27 = 2HX²

H = 27/2X²

Putting in the area,

we get,

A = 4X² + 6X(28/2X²)

A = 4X² + 84/X

Differentiating with respect to X,

A' = 8X - 84/X²

For minimum A,

8X - 84/X² = 0

X = 2.185 yards.

So, the length is 4.37 yards.

The height is 2.93 yards.

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Answer:

a) d(m) = 24.25 + m * 0.5

b) d(25) = 24.25 + 12.5 = 36.75

c) 36.75 / 0.5 = 73.5 minutes

Answer:

five million three hundred twenty-two thousand ninety-three and five hundredths

Step-by-step explanation:

have a great day and thx for your inquiry :)

Answer:

five million, three hundred and twenty two thousand and ninety three point zero five

Answer:

76

Step-by-step explanation:

a circle has a total of 360°

(x + 66) + (x +67) + 75 = 360

2x + 66 + 67 + 75 =360

2x +208 = 360

2x = 360 - 208

2x = 152

x = 76

Answer:

Step-by-step explanation:

Since the width is 40mm and the length is 78mm the ratio would be 40/78which can be reduced to 20/39

a. The efficiency of Expedition Everest is approximately 87.8%.

b. The utilization of Expedition Everest is approximately 94.7%.

c.  The demand is greater than the effective capacity, the operation is considered overcapacity. This means that the ride cannot accommodate all the riders who wish to ride, resulting in long waiting times for guests.

To calculate the efficiency and utilization of Expedition Everest, we need to compare the actual number of riders with the design capacity and effective capacity.

Given:

Demand = 3,000 riders/hour

Average riders = 1,800 riders/hour

Design capacity = 2,050 riders/hour

Effective capacity = 1,900 riders/hour

a. Efficiency:

Efficiency is calculated as the average riders divided by the design capacity, multiplied by 100%.

Efficiency = (Average riders / Design capacity) * 100%

= (1,800 / 2,050) * 100%

≈ 87.8%

Therefore, the efficiency of Expedition Everest is approximately 87.8%.

b. Utilization:

Utilization is calculated as the average riders divided by the effective capacity, multiplied by 100%.

Utilization = (Average riders / Effective capacity) * 100%

= (1,800 / 1,900) * 100%

≈ 94.7%

Therefore, the utilization of Expedition Everest is approximately 94.7%.

c. Capacity Analysis:

To determine if the operation is overcapacity or undercapacity, we compare the demand with the effective capacity.

Demand > Effective capacity

3,000 > 1,900

Since the demand is greater than the effective capacity, the operation is considered overcapacity. This means that the ride cannot accommodate all the riders who wish to ride, resulting in long waiting times for guests.

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Answer:

You do this by finding the area by each rectangle then the area of the quarter of the circle? (dont know what to call it) Then add it and round to the nearest tenth

Step-by-step explanation:

The estimator is unbiased only when the true parameter value matches the mean of the sampling distribution; otherwise, it is biased.

In part (a), the estimator is biased because the mean of the sampling distribution is different from the true parameter value. In part (b), the estimator is unbiased as the mean matches the true parameter value. In part (c), the estimator is biased again because the mean does not align with the true parameter value.

Bias refers to the tendency of an estimator to consistently overestimate or underestimate the true parameter value. An unbiased estimator has a sampling distribution with a mean that equals the true parameter value. In this case, we observe that the estimator is only unbiased when the true parameter value matches the mean of the sampling distribution. When the true parameter value deviates from the mean, the estimator becomes biased.

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Step-by-step explanation:

this is totally simple.

the formula for the area of a circle (as you can find with any search on the internet in seconds) :

A = pi×r²

r is the radius.

and once you understand even the most basics of a circle, you know that the radius is half of the diameter.

so, in our case, r = 6/2 = 3 m

the area of the circle is therefore

pi×r² = pi×3² = pi×9 m²

Answer:

(5,2)

Step-by-step explanation:

5 how much to the right you will go and 2 is how much you would go up by.

(I don’t know if I explained it well but it makes sense to me)

Anyway hope it helps

Answer:

4

Step-by-step explanation:

Problem

y = -2x + 1

d: {-4, -3, -2, -1} ri{

Blank 1:

Blank 2:

Blank 3:

Blank 4:

Solution

For this case we just need to find the range with the domain given like this:

Blank 1: -2(-4) +1= 8+1 =9

Blank 2: -2(-3) +1= 6+1=7

Blank 3: -2(-2) +1= 4+1=5

Blank 4: -2(-1) +1= 2+1=3

The value of (7²-√81) + √125) is 45

Squares are the numbers, generated after multiplying a value by itself. Whereas square root of a number is value which on getting multiplied by itself gives the original value. Hence, both are vice-versa methods. For example, the square of 2 is 4 and the square root of 4 is 2.Similarly, the square of 4 is 16 and the square root of 16 is 4.

A perfect square is a number, from a given number system, that can be expressed as the square of a number from the same number system. Therefore 4, 16, 25 are examples of perfect squares

7²-√81) + √125 is calculated as

49- 9+ 5 = 45

Therefore the value of 7²-√81) + √125 = 45

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Answer:

i cannot understand

Step-by-step explanation:

Answer:

x f(x) = 1/x

-8 -1/8

-6 -1/6

-4 -1/4

-2 -1/2

0 undefined

2 1/2

4 1/4

6 1/6

8 1/8

f(x) has a vertical asymptote at x = 0 and a horizontal asymptote at y = 0.

Answer:

Volume 1000 times larger

Step-by-step explanation:

Given

r (original data ) = x

result of multiplication = 10x

Discussion

Original Volume of the sphere = 4/3 pi * x^3

New Volume = 4/3 pi (10x)^3

New Volume = 4/3 pi 1000 x ^3

Conclusion

The volume is 1000 times larger when the radius is multiplied by 10.

Answer:

9

Step-by-step explanation:

The mean is equal to the sum of all numbers divided by the amount of numbers there are. If we represent the mean as m, sum as s, and number of numbers as n, we can write our equation as

m = s/n

Therefore, as we know the mean (7) and number of numbers (4), we can plug those in to find the sum.

7 = s / 4

Multiply both sides by 4

28 = s

We then have our sum. Because we know 3 numbers, and there are 4 total, there is one number left to figure out. Our current sum is 5+7+7 = 19, and we need a sum of 28. The difference between the sums, equivalent to the fourth number, is 28-19=9.