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kodGreya [7K]
3 years ago
8

If f(x)=5x^3 and g(x)=x+1, find (f.g)(x)

Mathematics
1 answer:
Dahasolnce [82]3 years ago
4 0

Answer:

B. 5x^4+5x^3

Step-by-step explanation:

(f.g)(x) = f(x) * g(x)   = 5x^3 * (x+1)

          = 5x^3  * x + 5x^3  * 1

          = 5x^4 + 5x^3

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The area of a rectangle is 14 m2 , and the length of the rectangle is 3 m less than double the width. find the dimensions of the
muminat
Width =3.5, length = 4

Let's make a few equations to summarize what we know.:
a = 14
l = 2w -3
a = wl

Now let's substitute the expression for l into the expression for area and solve.
a = w(2w - 3)
a = 2w^2 - 3w
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0 = 2w^2 - 3w - 14

which factors into
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Solving for w
2w - 7 = 0
2w = 7
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So w can be either 3.5 or -2. Since a negative width doesn't make sense, w = 3.5

Let's verify
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l = 2*3.5 - 3
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So the width is 3.5 and the length is 4.

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Answer:

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