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3 years ago

If f(x)=8-10x and g(x)=5x+4 what is the value of (fg)(-2)?

Mathematics

1 answer:

Shalnov [3]3 years ago

6 0

First, calculate f(g(x))==> you plug (5x+4) in the value of x in f(x)

==>f(g(x))= 8-[10(5x+4)===>8-50x-40===>f(g(x))= -50x + 32

& f(g(-2))= -100+32 =68.

There is a mistake in your answers, it should be 68 & not 78

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Answer:

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Step-by-step explanation:

Let's find the answer by using the arc length formula which is:

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Now, using the distance formula we have:

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Notice both equations gave the same length $4\sqrt{17}$ .

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3 years ago

A 208-yard-long road is divided into 16 parts of equal length. Mr. Ward paints a 4-yard-long strip in each part. How long is the

laila [671]

We have been given that a 208-yard-long road is divided into 16 parts of equal length.

Let us find length of each part.

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We are told that Mr. Ward paints a 4-yard-long strip in each part.

Now we will subtract length of painted strip from length of each equal part to find length of unpainted strip of each part of the road.

$\text{Length of unpainted strip}=13-4$

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