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Annette [7]
3 years ago
7

Solve the system of equations. 8x – 3y = 1 –2x + 3y = 11 A. (–1, –3) B. (–1, 3) C. (2, 5) D. (5, 2)

Mathematics
1 answer:
Makovka662 [10]3 years ago
4 0

Answer:

C. (2, 5)

Step-by-step explanation:

Looking at the answer choices, you can see that solving for y will tell you which choice is correct. We can eliminate x from the equations by adding 4 times the second equation to the first:

(8x -3y) +4(-2x +3y) = (1) +4(11) . . . . . adding the equations to eliminate x

9y = 45 . . . simplified; next we divide by 9

y = 5 . . . . . matches choice C

_____

Check

8(2) -3(5) = 16 -15 = 1

-2(2) +3(5) = -4 +15 = 11 . . . . the answer checks OK in both equations

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3 years ago
What is the product of a+3 and -2a2+15a+6b2
DaniilM [7]

Answer:

The third option

Step-by-step explanation:

Given

(a + 3)(- 2a² + 15a + 6b²)

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3 0
3 years ago
Read 2 more answers
Please help me with 1,2,3,4,5,6,7,8,9 tell me how u get it and the answer please I really need help
NNADVOKAT [17]

Answer:

1) x = 15

Step-by-step explanation:

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1)

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8 0
3 years ago
What is the perimeter?
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Please give brainliest if you can!

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3 years ago
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avanturin [10]

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4 0
3 years ago
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