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nikklg [1K]
3 years ago
12

What value of x is in the solution set of -5x – 15 > 10 + 20x? -2 -1 0 1

Mathematics
1 answer:
jekas [21]3 years ago
5 0

Answer: x < -1

Step-by-step explanation:

-5x-15>10+20x

-5x-15-20x>10'-25x-15>10

-25x-15>10

-25x>10+15

-25x>25

x < 25 / -25

=

x < -1

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Is (–28, 92) a solution to the equation y = 92?
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Answer:

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Step-by-step explanation:

the second number in a set of parenthesis is the y value and the number in the parenthesis is 92 which makes y=92 true

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3 years ago
Ryan $65 for n books. Write an expression that can be used to find the cost of one book.
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Step-by-step explanation:

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4 0
2 years ago
Read 2 more answers
I need help with these 2 problems I cant figure out.
Alla [95]

I started by labeling the right angle (Angle C) 90º. Next, I wrote down everything in one equation.

2x + 90 + 3x - 20 = 180º (180 degrees in a triangle)

Next, I add 20 on both sides.

2x + 90 + 3x = 200º

I combine like terms (2x and 3x)

5x + 90 = 200º

I subtract 90 from both sides.

5x = 110º

Divide 110 by 5 to get x.

x = 22

======

For problem two, I label all the angles I know.

49º + 80º + r = 180º

I add 80 and 49.

129º + r = 180º

I subtract 180 and 129 and get 51º, which is your angle for R.

For angle X, you know that angle R plus angle X equals half of a circle, which is 180º

We know from before that 129º is 180º without R, so X is 129º

I hope this helps! Let me know if I'm wrong!

5 0
3 years ago
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