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Inga [223]
3 years ago
12

Which ordered pair is a solution of the equation? y=-2x-5y=−2x−5

Mathematics
2 answers:
olya-2409 [2.1K]3 years ago
8 0

Answer:

x=3y

Step-by-step explanation:

Step 1: flip the equation.

2x−5y=y

Step 2: Add 5y to both sides.

2x−5y+5y=y+5y

2x=6y

Step 3: Divide both sides by 2.

2x

2

=

6y

2

x=3y

anygoal [31]3 years ago
6 0

Answer:

if this is for khan academy and is a multiple choice choose the answer (neither) if not its 5

Step-by-step explanation:

y - 2x - 5y = 2x - 5

4x+ 4y = 5

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What is the first step in solving the quadratic equation -5x^2+8=133?
bezimeni [28]

Answer:

a) subtracting '8' on both sides, we get

                                      - 5 x² + 8-8 = 133-8

                                        - 5 x²  = 125

b) The solution is x = 5 i

Step-by-step explanation:

<em>Explanation</em>:-

<u><em>Step (i):</em></u>-

Given quadratic equation  - 5 x² + 8 = 133

subtracting '8' on both sides, we get

                                      - 5 x² + 8-8 = 133-8

                                       - 5 x²  = 125

<u><em>Step(ii)</em></u>:-

dividing '-5' on both sides, we get

          \frac{-5 x^2}{-5} = \frac{125}{-5}

            x²  = -25

            x = \sqrt{-25}

            x = 5 i

                                 

                                   

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3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

The thing in red says "vertically opposite"

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