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3 years ago

Given the relation y = −4x2 − 8, if the input is 2, what is the output? (4 points) 8 −8 −16 −24

Mathematics

1 answer:

Trava [24]3 years ago

3 0

Answer:

-4x^2 - 8......input (x) = 2

Step-by-step explanation:

-4(2^2) - 8 =

-4(4) - 8 =

-16 - 8 =

- 24 <==

i hope this helps you :)

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I need help with #11 and #12 how do I do this?

USPshnik [31]

Answer:

11. x = 6; y = 6.5

12. x = 2; y = 4

Step-by-step explanation:

In each figure, the hash marks on the lines indicate the parallel lines (marked with red arrows) are equally-spaced. That means the two expressions involving x are equal to each other, and the two expressions involving y are equal to each other.

11. 2x +1 = x +7

x = 6 . . . . . . . subtract (x+1) from both sides

and

3y -8 = y +5

2y = 13 . . . . add (8-y) to both sides

y = 6.5 . . . . divide by the coefficient of y

12. x +3 = 3/2x +2

1 = 1/2x . . . . . subtract (x+2)

2 = x . . . . . . . multiply by 2

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2 years ago

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Reduce to simplest form. -\dfrac{7}{8}-\left(-\dfrac{5}{6}\right)=− 8 7 −(− 6 5 )=minus, start fraction, 7, divided by, 8, e

slavikrds [6]

Answer:

$-\dfrac{1}{24}$

Step-by-step explanation:

We are required to reduce the expression below to its simplest form

$-\dfrac{7}{8}-\left(-\dfrac{5}{6}\right)$

STEP 1: Remove the brackets

Take note that the product of same sign(- and -) will give you the addition sign.

$-\dfrac{7}{8}-\left(-\dfrac{5}{6}\right)=-\dfrac{7}{8}+\dfrac{5}{6}$

STEP 2: Find the Lowest Common Multiple of 8 and 6

Lowest Common Multiple of 8 and 6 is 24

STEP 3: Use the LCM to Simplify

$-\dfrac{7}{8}+\dfrac{5}{6}=\dfrac{(-3X7)+(5X4)}{24}\\=\dfrac{-21+20}{24}\\=\dfrac{-1}{24}\\=-\dfrac{1}{24}$

Therefore:

$-\dfrac{7}{8}-\left(-\dfrac{5}{6}\right)=-\dfrac{1}{24}$

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IgorC [24]

Answer:

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Step-by-step explanation:

-5a-9+a=15

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Add 9 to each side

-4a -9+9 = 15+9

-4a = 24

Divide by -4

-4a/-4 = 24/-4

a = -6

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3 years ago

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2 years ago

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weqwewe [10]

Answer:

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