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Fiesta28 [93]
3 years ago
14

Solve the equation. If necessary, round your answer to the nearest tenth.

Mathematics
2 answers:
lukranit [14]3 years ago
8 0

Answer:

5.5 or -5.5

Step-by-step explanation:

I am 100% sure! :>

PLEASE GIVE ME BRAINLIEST!!!!

PLLLEEEEAAAASSSSEEEE!!!!!!!!!!

Agata [3.3K]3 years ago
6 0
B: x = 5.5 or -5.5 (square root) -> 2x = 11 (divide by 2) -> x = 5.5 or -5.5
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X + 20 is greater than 4x -1
Paul [167]

Answer:

False; they are equal.

Step-by-step explanation:

The equation is x + 20 > 4x - 1.

First, do the opposite of -1 and add one to the other side while -1+1 cancels out. Now it's x+21 > 4x. Now subtract x from both sides. Positive x minus negative x cancels out and 4x minus x or 1x is 3x. Now you're left with 21> 3x. Now do the inverse operation of multiplication and divide both sides by 3. Now the 3x over 3 cancels out and 21 divided by 3 is 7. So x is 7. If you substitute it in. It will be 7+20 which is 27 which is great than 4(7)-1 which is 28-1. 28-1 is 27. So, the equation is false. They are equal.

7 0
3 years ago
Please help with this math problem
stepladder [879]

Answer:

-15

Step-by-step explanation:

Given:

  • x=-7
  • -14+7=x+8

Simply plug in and see if the statement is true. If not, isolate x.

Test for truth:

  • -14+7=-7+8
  • -7=1
  • NOT true.

Isolate x in original equation:

  • -14+7=x+8
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  • -7-8=x
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6 0
2 years ago
Read 2 more answers
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