3 years ago

MY LAST QUESTION HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Lemur [1.5K]3 years ago

5 0

A- the grams of copper is total which is 128 grams.*** b- is the total amount of percent of copper which is 71.76%+9.37

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If f(x)=25-x^2 and g(x)=x+5, what is (f/g)(x)?

elena-s [515]

Answer:

$\frac{f(x)}{g(x)} = (5-x)$

Step-by-step explanation:

f(x)=25-x^2 and g(x)=x+5

We need to find (f/g)(x)

(f/g)(x) = f(x)/ g(x)

we divide f(x) by g(x) and then we simplify

$\frac{f(x)}{g(x)} = \frac{25-x^2}{x+5}$

WE factor 25-x^2

25-x^2 = 5^2 - x^2 = (5-x)(5+x)

$\frac{f(x)}{g(x)} = \frac{25-x^2}{x+5}$

$\frac{f(x)}{g(x)} = \frac{(5-x)(5+x)}{x+5}$

5+x or x+5 are same , so we cancel out x+5

$\frac{f(x)}{g(x)} = (5-x)$

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3 years ago

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ANSWER:
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