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larisa [96]
3 years ago
6

what is the value of y in the solution to the following system of equations? (5 points) 2x y = −4 5x 3y = −6

Mathematics
1 answer:
TiliK225 [7]3 years ago
7 0
2x+y=-4
5x+3y=-6

multiply first equaton by -5 and second by 2 then add them

-10x-5y=20
<u>10x+6y=-12 +</u>
0x+1y=8

y=8

the y value is 8
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brantty works 21.5 hours every week . if she earns 8.50 per hour how much does she earn in one week round part a to the nearest
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Step-by-step explanation:

1 hour - $8.50

21.5 hours (one week) - $8.50 × 21.5 = $182.75

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What is 8 squared? Please help
FromTheMoon [43]
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4 0
3 years ago
Read 2 more answers
Factor the trinomial 10x^2 + 11x - 6
emmainna [20.7K]

Answer:

Step-by-step explanation:

10  x²+11x-6

=10 x²+15x-4x-6

=5x(2x+3)-2(2x+3)

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3 0
3 years ago
-7(x+7=-56 I really need help
Reptile [31]

Answer:

x=1

Step-by-step explanation:

Divide both sides by the numeric factor on the left side then solve.

Hope this helps.

3 0
3 years ago
Please help me. i want to have this finished.
Anuta_ua [19.1K]
We know that y is equal to x-2. We can just substitute x-2 for y since y is equal to it. 

10x- 9(x-2)=24

Distribute.

10x- 9x+18= 24

x+18= 24

Subtract 18 on both sides.

x= 6

Now, plug in x.

y= (6)-2

y= 4

We can check this to see if this works:

4= 6-2, 4=4 

10(6)- 9(4)= 24

60-36= 24, 24=24

x=6 and y=4

I hope this helps!
<em>~kaikers</em>
5 0
3 years ago
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