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3 years ago

Find f(-7) if f(x) = 2x+8. -6 03 02 22

Mathematics

2 answers:

Dmitriy789 [7]3 years ago

5 0

-6, because (-7) x 2 = -14, + 8 = -6.

lions [1.4K]3 years ago

4 0

The answer for you problem is -6.

2(-7)+8
-14 +8
-6

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Explanation:

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2 years ago

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sweet-ann [11.9K]

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4 0

3 years ago

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What is the slope of a line that is parallel to the graph of 5x+4y=y?

torisob [31]

Answer:

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Step-by-step explanation:

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3 years ago

What is x2 – 6 = 16x + 30 rewritten in standard form, then factored?

AlexFokin [52]

Answer:

The standard form of quadratic equation is $x^2-16x-36=0$

The factored form of $x^2-16x-36=0$ is $(x+2)(x-18)=0$

Step-by-step explanation:

Given equation $x^2-6=16x+30$

We have to write in standard form and then factorize the given equation.

The standard form for a general quadratic equation is given as $ax^2+bx+c=0$

Consider $x^2-6=16x+30$

Taking all terms to left side, we have,

$x^2-6-16x-30=0$

Adding like terms, we have,

$x^2-16x-36=0$

Now we will factorize it.

We will solve the quadratic equation $x^2-16x-36=0$ using middle term splitting method,

-16x can be written as -18x+2x

$x^2-16x-36=0$ becomes

$\Rightarrow x^2-18x+2x-36=0$

Taking x common from first two terms and 2 common from last two terms we have,

$\Rightarrow x(x-18)+2(x-18)=0$

$\Rightarrow (x+2)(x-18)=0$

Thus, the factored form of $x^2-16x-36=0$ is $(x+2)(x-18)=0$

4 0

3 years ago

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