3 years ago

i need help answering this but also how to do it like step by step. i don’t understand this. (9 + 7x) - 7x

1 answer:

7 0

Answer: 9

Step-by-step explanation: so first you remove the ( ) because they’re useless in this then once you remove then Since two opposites add up to zero, remove them from the expression then you only get left with 9.

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Please solve for x. I need this answered.

spin [16.1K]

2.5x - 3 + 2x = 1.75x - 1.25x + 13

4.5x - 3 = 0.50x + 13

4.0x = 16

x = 4

Answer: 4

2. We'll assume those xs are in the numerator

(3/7)x - 1/4 + (3/7)x = (9/7)x - (3/7)x + 3/4 - 1

(6/7)x - 1/4 = (6/7)x - 1/4

0 = 0

That's always true.

Answer: Any x is a solution.

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3 years ago

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PLZ HELP ME

iVinArrow [24]

Answer:

y=-1x+8

Step-by-step explanation:

y=mx+b

m=slope

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2 years ago

First question. The midpoint of SR is...

Blizzard [7]

The formula of a midpoint SR:

$M\left(\dfrac{x_S+x_R}{2},\ \dfrac{y_S+y_R}{2}\right)$

We have

S(4, 1) and M(7, -5)

Substitute:

$\dfrac{4+x_R}{2}=7\qquad|\cdot2\\\\4+x_R=14\qquad|-4\\\\x_R=10\\\\\dfrac{1+y_R}{2}=-5\qquad|\cdot2\\\\1+y_R=-10\qquad|-1\\\\y_R=-11$

<h3>Answer: R(10, -11)</h3>

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3 years ago

Write an equivalent ratio for 7:8 with 40 as one of the terms.

kvv77 [185]

Answer:

Step-by-step explanation:

Five equivalent ratios:

7:8 = 14:16

= 21:24

= 70:80

= 49:56

= 35:40

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2 years ago

What is the solution to this system of linear equations?

kvasek [131]

Answer:

The correct answer is D. (-1,3)

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2 years ago

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