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Luba_88 [7]
2 years ago
7

What is the result of subtracting the second equation from the first ? -7x-y=0 and 7x+8y=-6

Mathematics
1 answer:
hoa [83]2 years ago
5 0

Answer:

- 14x - 9y = 6

Step-by-step explanation:

- 7x - y = 0 → (1)

7x + 8y = - 6 → (2)

Subtracting (2) from (1) term by term

- 7x - 7x - y - 8y = 0 - (- 6)

- 14x - 9y = 0 + 6

- 14x - 9y = 6

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goblinko [34]

Answer:

4x + 15x + 7

Step-by-step explanation:

x2 + x2 = 4x

5x + 10x = 15x

-14 + 21 = 7

5 0
2 years ago
Solve for x.<br><br> 0.5x+78.2=287
Alona [7]

Answer:

x =417.6

Step-by-step explanation:

0.5x+78.2=287

Subtract 78.2 from each side

0.5x+78.2-78.2=287-78.2

.5x =208.8

Divide each side by .5

.5x/.5 = 280.8/.5

x =417.6

8 0
2 years ago
Using the diagram, which fraction is equivalent to 1?
Tcecarenko [31]

Answer:

5/5

Step-by-step explanation:

7 0
3 years ago
Nancy is running on a trail that's 5.3 miles long. After 20 minutes, she has run 1.45 miles. Write an addition to fine how much
mars1129 [50]

Answer:

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Step-by-step explanation:

she has 3.85 miles left to go because she already ran 1.45 and if you subtract that from the 5.3 you get 3.85 left to run.

5 0
3 years ago
3) Given the box plot below, what is the lower quartile and upper quartile? *
Allisa [31]

Answer:

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Step-by-step explanation:

5 0
3 years ago
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