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4vir4ik [10]
3 years ago
11

My friend needs help explaining this and I don't know anything.

Mathematics
1 answer:
DIA [1.3K]3 years ago
7 0

To solve this equation (correct me if i'm wrong), you could first multiply the bottom equation by 3, to get 15y. After that, we get -4x-15y=-17 and -3x + 15y=-39, and if we add the 2 equations up, on top of each other, we get -7x=-56, and we can conclude that x=8, and with substitution (-32 - 15y = -17), we know that y=(-1)


Here's what I mean by on-top


-4x-15y=-17

-3x + 15y=-39


-7x=-56

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leonid [27]
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I = (1900)(.11)(5)
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3 years ago
The discount on a toy is 40% the toy robot is on sale for $54 find the original price
maria [59]

Answer:

The original price is $90.

Step-by-step explanation:

100% - 40% = 60%

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y × 60 = 54 × 100

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60y ÷ 60 = 5400 ÷ 60

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5 0
2 years ago
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Answer:

  • See below

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2 years ago
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5 0
3 years ago
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Ugo [173]

Answer:

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7 0
3 years ago
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