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3 years ago

How do you solve 8x-3y=-70 and -2x+5y=-8 using the elimination method please show work.

Mathematics

2 answers:

Black_prince [1.1K]3 years ago

8 0

Answer:

(-11, -6).

Step-by-step explanation:

8x-3y=-70

-2x+5y=-8 Multiply this equation by 4:

-8x+20y=-32

Now add this last equation to the first equation:

17y = -102 - we see that we have eliminated x.

y = -102/17

= -6.

Now plug y=-6 in the first equation to get x:

8x-3(-6)=-70

8x =-70 -18

8x =-88

x = -11.

lora16 [44]3 years ago

3 0

Answer:

6x+2y=-78

Step-by-step explanation:

8x-3y=-70

-2x+5y=-8

6x+2y=-78

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Answer:

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3 years ago

Write an equality with the solution x <12

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3 years ago

What is the volume of a shipping cube with dimensions of 2 and 1/2 feet

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For this case we have that by definition, the volume of a cube is given by:

$V = l ^ 3$

Where:

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According to the statement data:

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Substituting in the formula we have:

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3 years ago

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3 years ago

a tree casts a shadow 42 feet long.at the same time, a person 5 feet tall casts a shadow 7 feet long. what is the hight of the t

arlik [135]

Answer:

height of the tree is 30 feet

Step-by-step explanation:

a tree casts a shadow 42 feet long . at the same time, a person 5 feet tall casts a shadow 7 feet long.

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3 years ago