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2 years ago

11

Suppose you have data that shows that 12% of athletes test positive for steroids. You also know that 11% of athletes test positi

ve for steroids and actually use steroids. What is the probability that an athlete uses steroids, given that he tests positive?
A.
0.37
B.
0.43
C.
0.51
D.
0.67
E.
0.92

1 answer:

larisa [96]2 years ago

4 0

Answer:

lol don't listen to him/her, they're wrong.

it's 0.92, for plato. i got it right

Step-by-step explanation:

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Solve x^2 + 2x - 48 = 0

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Step-by-step explanation:

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If 2 liters of sea water contain 70 grams of salt, how much salt is in 32 liters of sea water?

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Answer:

1120 grams

Step-by-step explanation:

The amount of sea water is directly proportional to the amount of salt in the water.

Let the amount of sea water be W and the amount of salt be S.

This means that:

W α S

=> W = kS

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2 years ago

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2 years ago

F(x) = 4x + 4 g(x) = 3x +7

salantis [7]

Answer:

Part 1) $(f+g)(x)=7x+11$

Part 2) $(f-g)(x)=x-3$

Part 3) $(f/g)(x)=\frac{(4x+4)}{(3x+7)}$

Part 4) In interval notation the domain is (-∞,-7/3) ∪ (-7/3,∞)

Part 5) $(f o g) (x)=12x+32$

Step-by-step explanation:

we have

$f(x)=4x+4$

$g(x)=3x+7$

Part 1) Find (f+g)(x)

we know that

$(f+g)(x)=f(x)+g(x)$

substitute the given functions

$(f+g)(x)=(4x+4)+(3x+7)$

Combine like terms

$(f+g)(x)=7x+11$

Part 2) Find (f-g)(x)

we know that

$(f-g)(x)=f(x)-g(x)$

substitute the given functions

$(f-g)(x)=(4x+4)-(3x+7)$

$(f-g)(x)=4x+4-3x-7$

Combine like terms

$(f-g)(x)=x-3$

Part 3) Find (f/g)(x)

we know that

$(f/g)(x)=\frac{f(x)}{g(x)}$

substitute the given functions

$(f/g)(x)=\frac{(4x+4)}{(3x+7)}$

Part 4) What the domain for the answer in question 3

we have

$(f/g)(x)=\frac{(4x+4)}{(3x+7)}$

we know that

The denominator of the quotient cannot be equal to zero

so

$3x+7=0$

$3x=-7$

$x=-\frac{7}{3}$

The domain is all real numbers except the number x=-7/3

In interval notation the domain is (-∞,-7/3) ∪ (-7/3,∞)

Part 5) Find (f o g) (x)

we know that

$(f o g) (x)=f(g(x))$

substitute

$f(g(x))=4(3x+7)+4$

$f(g(x))=12x+28+4$

$f(g(x))=12x+32$

therefore

$(f o g) (x)=12x+32$

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