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3 years ago

Z=7f/r+4 , solve for r

Mathematics

1 answer:

lora16 [44]3 years ago

3 0

Answer:

r = ----------- - 4

Step-by-step explanation:

I will assume that you meant:

z = ------------

r + 4

Solve for r. Start by interchanging z and (r + 4):

r + 4 = -----------

Now subtract 4 from both sides. This isolates r:

r = ----------- - 4

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If f(x)=x-1/3 and g(x)=3x+1, what is (f o g)(x)?

BlackZzzverrR [31]

Answer:

$3x+\frac{2}{3}$

Step-by-step explanation:

$f(x)=x-\frac{1}{3}$

$g(x)=3x+1$

Hence, $(f o g)(x)=f(3x+1)$

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Simplifying,

$f(3x+1)=3x+(1-\frac{1}{3})$

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3 years ago

Two events, X and Y, are independent of each other. P(Y)= and P(X and Y)=. What is P(X) written as a decimal? Round to the neare

Rainbow [258]

Answer:

0.4

Step-by-step explanation:

The question is not complete, the correct question is:

Two events, X and Y, are independent of each other. P(Y) = 5/6 and P(X and Y) = 1/3. What is P(X) written as a decimal? Round to the nearest tenth, if necessary

Answer: Two events (event X and event Y) are said to be independent if the probability of event X occurring does not affect the probability of event Y occurring and vice versa. If the probability of X = P(X) and the probability of Y = P(Y), therefore P(X and Y) = P(X) × P(Y).

Given that P(Y) = 5/6 and P(X and Y) = 1/3. Therefore:

P(X and Y) = P(X) × P(Y)

Making P(X) the subject of formula by dividing through by P(Y) gives:

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