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Alinara [238K]
3 years ago
12

Solve using elimination. –9x + 9y = 18 –6x + 9y = –12

Mathematics
2 answers:
Arada [10]3 years ago
8 0
You can multiply either the top or bottom equation by -1 so lets say you apply it to the bottom equation it’ll look like this:

-9x + 9y = 18
6x - 9y = 12

then the +9y and -9y will cancel out

-9x = 18
6x =12

then you add the two equations together

-3x = 30

divide both sides by -3

x = -10
ahrayia [7]3 years ago
5 0
Answer:
x = -10 and y = -8
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Answer:

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OD Jake solved the equation correctly.

Answer:

If the air trolley ended at 60 km and it traveled 20 km- what was its starting position?

 

Step-by-step explanation:

 

Step-by-step explanation:

Step

Statement

1

2

3x + 7 = 15

x + 7 - 7 = 15

ža

3

= 15

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5

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Which statement is true?

A. Jake made a mistake in step 2.

B.

Jake made a mistake in step 4.

C.

Jake made a mistake in step 5.

OD Jake solved the equation correctly.

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If the air trolley ended at 60 km and it traveled 20 km- what was its starting position?

 

Step-by-step explanation:

 

3 0
3 years ago
Mr. Indigo purchased some trees to plant in his backyard. He bought three oak trees for $23 each and an elm tree for $42. What w
Rom4ik [11]

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Step-by-step explanation:

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4 0
3 years ago
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Answer:

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Step-by-step explanation:

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To do that we will shift the decimal point to the front up to the front of digit 8. This shows that the decimal point will be shifted 2times to the front. Since of is shifted 2times to the front, our power of 10 will be -2.

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This gives the required answer.

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3 0
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puteri [66]

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