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Sladkaya [172]
3 years ago
5

X = 10 5x − 4y = 18 substetution need fast

Mathematics
1 answer:
Leto [7]3 years ago
4 0
Y = 8

Explanation:

X = 10

5x - 4y = 18

5(10) - 4y = 18

50 - 4y = 18

50 - 4y = 18
-50 -50

-4y = -32

-4y/-4 = -32/-4

y = 8
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Perform the operation (9x^2+6x-7)+(-9x-5)
asambeis [7]

Answer:

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8 0
2 years ago
10x + 4y = 24 6x +12y = 48 What is the value of y? * <br>A. 7 <br>B. 7/2 <br>C. 1 <br>D. -7/2​
ziro4ka [17]

Answer:

B

Step-by-step explanation:

1) lets use elimination to solve this:

multiply 10x+4y=24 with 3 in order to get "4y" into "12y"

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now subtract both equations to eliminate 'y"

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now substitute 1 in the above equation:

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4 0
3 years ago
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