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3 years ago

A researcher is conducting an experiment to test a new vitamin supplement. The researcher has recruited 8

Mathematics

1 answer:

Tju [1.3M]3 years ago

4 0

Answer:

Step-by-step explanation:

This is a problem of Permutation and Combination, not probability.

This clarification is given because most questions like this are on Probability and Statistics.

The researcher has recruited 8 participants and must divide them into two groups of 4 people each.

So there's:

GROUP A - Placebo Group

GROUP B - Experimental Group

Since the experiment is on humans - distinct objects - they will have distinct identities. Assume the 8 participants are lined up according to identities 1,2,3,4, 5,6,7,8

[2+2+2+2 +2+2+2+2] × 2 = 16×2 = 32

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The function f(x) is the total amount spent at a store, when purchasing x items that are $5 each and the items are not taxable

Keith_Richards [23]

F(x)=5x

normal domain: all real numbers
practical domain: <span>all positive integers

</span>becasue we can substituent with any positive integer in the place of x

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3 years ago

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Which of the following is not true about a square?

Kisachek [45]

The first statement is false. A square DOES have 4 right angles.

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3 years ago

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Convert the following to scientific notation: 0.000665.

BaLLatris [955]

- - Step 1: Move the decimal point to the right, until you get greater then 1 and less than 10. In this case we moved it till we got 6.65.
- - Step 2: Count how many times you moved the decimal over: In this case, we moved it 4 times.
- - Step 3: All you have to do now is chose which one has 6.65 over -4.
(We are saying negative because when you move it to the right, it becomes negative.)
Final answer: A

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3 years ago

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The product of 6 and 11 written as an algebraic expression

docker41 [41]

Answer:

(2×3)¹

(11×1)¹

Step-by-step explanation:

2×3=6 so 2 to the power 1 is 2 and 3 to the power 1 is 3 so 2×3=6

11×1=11 so 11 to the power 1 is 11 and 1 to the power 1 is 1 so 11×1 =11

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2 years ago

Given the cost function C(x) = 0.81x + 60, 420 and the revenue function R(x) = 1.87x, find the break-even point

Viktor [21]

Answer:

x = 57,542.8571

Step-by-step explanation:

C(x) = 0.81x + 60,420

R(x) = 1.87x

At break even point, Cost function and revenue function becomes equal.

-> C(x) = R(x)

-> 0.81x + 60,420 = 1.87x

-> 60420 = 1.87x - 0.82x

-> 60420 = 1.05x

-> x = 60420/1.05

-> x = 57,542.8571

Thus, at break even point x = 57,542.8571

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2 years ago