3 years ago

How to solve this question

Mathematics

1 answer:

cupoosta [38]3 years ago

7 0

8.83176088663 is the answer

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X - Y = 11 2x + Y = 19 where do the lines cross

katen-ka-za [31]

Just solve the equations:
A) X - Y = 11
B) 2x + Y = 19
Multiply A) by -2

A) -2X +2Y = -22 then add to B)
B) 2x + Y = 19
3Y = -3
Y=-1

A) X - -1 = 11
x = 10

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3 years ago

Please solve this with each step

grandymaker [24]

Step-by-step explanation:

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Answer:

$u=\frac{8y-72}{7}$

Step-by-step explanation:

Flip the equation.

$\frac{7}{8}u+9=y$

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$\frac{7}{8}u+9(-9)=y(-9)$

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Divide both sides by 7/8

$u=\frac{8y-72}{7}$

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Answer:

false

Step-by-step explanation:

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