3 years ago

What is the sum?

Mathematics

1 answer:

Alona [7]3 years ago

8 0

D.6x^2+3x+3, to find your answer combine like terms. ex: x^2 and 5x^2 have ^2 in common so combine to get 6x^2.

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What steps are used to solve this equation?<br> X/2 = 7

Luda [366]

Answer:

14 because 2×7 is 14 and 14 can go into 2 7times

3 0

4 years ago

PLEASEEEE ANSWER ASAP

Alona [7]

Answer:

x = -1, x = 1

Step-by-step explanation:

Factor the equation. (It's a difference of squares, so we know the form will be (a-b)(a+b).)

$y = x^{2} - 1\\y = (x-1)(x+1)$

Test this by FOILing it out, if you're unsure. This is something it can be good to memorize!

Set it equal to 0.

$0 = (x+1)(x-1)$

Separate the two parenthetical expressions by the Zero Product Property.

$0 = x+1\\0 = x-1$

Solve for x!

$x=-1, x=1$

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3 years ago

If y varies inversely as x and y=-11 when x=1, what is y when x =11?

faust18 [17]

Answer:

I thinks it is -11

Step-by-step explanation:

3 0

3 years ago

Simplify : 4y^2+12y-40\y^2+2y-8

PSYCHO15rus [73]

2(2y^4 + 7y^3 - 4y^2 -20)
___________________
Y^2

4y^2 - 40/y^2 + 14y - 8

2(-2y^4 - 7y^3 + 4y^2 + 20)
_ _____________________
Y^2

8 0

3 years ago

A television screen, length is 16 1/2 inches, width is w inches, and area is 462 square inches. Select all THREE equations that

tatiyna

Answer:

it's B, C, and D

Step-by-step explanation:

A. w ⋅ 462 = 16 1/2

not A

w * a ≠ l

B. 16 1/2 ⋅ w = 462

is B

l * w = a

C. 462 ÷ 16 1/2 = w

is C

a / l = w

D. 462 ÷ w = 16 1/2

is D

a / w = l

E. 16 1/2 ⋅ 462 = w

not E

l * a ≠ w

3 0

3 years ago