3 years ago

Seven times a number is the same as 12 more than 3 times the number

Mathematics

1 answer:

Brums [2.3K]3 years ago

5 0

Answer:

x=3

Step-by-step explanation:

7x=12+3x

4x=12

x=3

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Let f(x) = 5x + 4 and g(x) = x2 - 4. Find the following.<br> (gof)(-2)

Fed [463]

Answer:

(g ￮ f)(-2) = 32

Step-by-step explanation:

Given

$f(x)=5x+4$

$g\left(x\right)=x^2-4$

We have to evaluate (g ￮ f)(-2), so first we will evaluate f(-2) then use this value to evaluate g(x).

Finding f(-2)

$f(x)=5x+4$

$f(-2) = 5(-2)+4$

$= -10 + 4$

$= -6$

Then

$g\left(-6\right)=\left(-6\right)^2-4$

$=36-4$

$= 32$

Therefore,

(g ￮ f)(-2) = 32

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Step-by-step explanation:

divide 14/56 and you should get a decimal:

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