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2 years ago

PLEASE HELP WITH EXPLANATION F(x) = 3 - x; g(x) = -2x find f(g(2))

Mathematics

1 answer:

ioda2 years ago

8 0

Given,

$f(x) = 3 - x$

and

$g(x) = -2x$

Now,

$g(2) = - 2(2) = - 4$

$f(g(2)) = 3 - ( - 4) = 3 + 4 = 7$

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Answer:

s= 30000+1500x

Step-by-step explanation:

Given data

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His salary for the first year is $30,000

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2 years ago

PLEASE SOLVE FOR QUESTION 13!!!!!

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3 years ago

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What is the factored form of the expression?<br><br> d^2 = 36d + 324

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Answer:

$(x-43.45)(x+7.45)=0$

Step-by-step explanation:

We have the quadratic equation $d^{2}=36d+324$ i.e. $d^{2}-36d-324=0$

As, the roots of the quadratic equation $ax^{2}+bx+c=0$ are given by $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$ .

So, from the given equation, we have,

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Substituting the values in $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$ , we get,

$x=\frac{36\pm \sqrt{(-36)^{2}-4\times 1\times (-324)}}{2\times 1}$

i.e. $x=\frac{36\pm \sqrt{1296+1296}}{2}$

i.e. $x=\frac{36\pm \sqrt{2592}}{2}$

i.e. $x=\frac{36\pm 50.9}{2}$

i.e. $x=\frac{36+50.9}{2}$ and $x=\frac{36-50.9}{2}$

i.e. $x=\frac{86.9}{2}$ and $x=\frac{-14.9}{2}$

i.e. x = 43.45 and x = -7.45

Thus, the roots of the equation are 43.45 and -7.45.

Hence, the factored form of the given expression will be $(x-43.45)(x+7.45)=0$

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Answer:

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