3 years ago

Simplify the expression 13+(x+8)

Mathematics

1 answer:

Fudgin [204]3 years ago

7 0

Answer:x+21

Step-by-step explanation:

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What three numbers must be multiplied by 6

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6, 36, 60 have to be multiplied by six in order to get the answer.

Step-by-step explanation:

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Use a calculator.

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2 years ago

If f(x)=4x-2 and g(x)=-8x+7, find h(x)=f(x) - g(x)

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Answer:

$h(x)=12x-9$

Step-by-step explanation:

We are given the two functions:

$f(x)=4x-2\text{ and } g(x)=-8x+7$

And we want to find:

$h(x)=f(x)-g(x)$

So, by substitution:

$h(x)=(4x-2)-(-8x+7)$

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2 years ago

Select the correct answer.

Sophie [7]

Answer:

D) x² -x - 10 =0

Step-by-step explanation:

Given that

$\frac{2}{3x-6} - \frac{1}{3x+6} = \frac{1}{3}$

L.C.M

$\frac{2(3x+6)-(3x-6)}{(3x+6)(3x-6)} = \frac{1}{3}$

$\frac{(6x+12-3x+6)}{(3x+6)(3x-6)} = \frac{1}{3}$

$\frac{(3x+18)}{((3x)^{2} )-(6)^{2} } = \frac{1}{3}$

⇒ $3(3x+18) = 9 x^{2} - 36$

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⇒ 9 x² - 36 - 9x - 54 =0

⇒ 9 x² - 9x - 90 =0

⇒ 9(x² -x - 10 ) =0

⇒ x² -x - 10 =0

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2 years ago