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alina1380 [7]
3 years ago
11

1.1. Which statement explains why the two systems of equations below have the

Mathematics
1 answer:
marin [14]3 years ago
7 0

Answer:

B. The first equation in B is the sum of the equations in A, while the other is obtained

by multiplying the first equation in A by 2.

Step-by-step explanation:

If we add the first two equations that shown in A so

6x + 8y + 2x - 5y = -10 + 12

8x + 3y = 2

Now the first equation in A would be multiplied by 2

So

2(6x + 8y = -10)

12x + 16u = -20

Therefore the correct option is B.

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One number is eight less than a second number. Twice the first is 12 more than 4 times the second. Find the numbers.
tia_tia [17]

Answer:

Step-by-step explanation:

"One number is eight less than a second number."

x = y-8

"Twice the first is 12 more than 4 times the second."

2x = 4y+12

substitution

2(y-8) = 4y + 12

2y - 16 = 4y + 12

2y = -28

y = -14

x = y-8 = -22

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Please help fast!!!
PSYCHO15rus [73]

Answer:

678.24 cubic in.

Step-by-step explanation:

Ok, first find the area of the base.

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Then multiply that area by the height, which is 8×3=24

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Let me know if you got it!

3 0
2 years ago
I need help what is 7h+1−h+4?
zloy xaker [14]

Answer:

6h+5

Step-by-step explanation:

7h-h=6h

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3 0
2 years ago
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Find the length of the unknown side round your answer to the nearest whole number 18 and 4
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Answer:

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90% sure

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