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3 years ago

(7x-y=7(x+2y=6 estimate the solution to the system of equations

Mathematics

1 answer:

jolli1 [7]3 years ago

8 0

Multiply the first equation by 2 to then use elimination by adding the 2 equations.

So, 14x-2y=14

+. x+2y=6

Equals 15x=20 so x=20/15=4/3

Plug in to first equation to get y

7(4/3)-y=7

28/3-y=7

28/3-y=21/3

So y=7/3

Plug both x and y into second equation to check

4/3+2(7/3)=

4/3+14/3=18/3=6 it works

So x=4/3, y=7/3

Hope this helps! Have a blessed day!

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Answer:

The correct option is (A).

Step-by-step explanation:

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Here,

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HT = height in meters

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$EER = 662 - (9.53 \times AGE) + PA \times (15.91 \times WT + 539 \times HT)$

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3 years ago

This triangle is a multiple of one of the triples listed here. What is the hypotenuse?

stiv31 [10]

Answer:

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Step-by-step explanation:

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(7x-y=7(x+2y=6 estimate the solution to the system of equations ​

(7x-y=7(x+2y=6 estimate the solution to the system of equations