3 years ago

Use elimination to solve for x and y:

Mathematics

2 answers:

tankabanditka [31]3 years ago

4 0

Answer:

multiply second eqyation by 9

Step-by-step explanation:

then subtract with 1 st eqn

dimaraw [331]3 years ago

4 0

q9x-4y=19

9x=19+

1)x=19+4y/9

x+4y=19

2)x=19-4y

1 and 2

x=19+4y/9=x=19-4y

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3 years ago

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In a diagram, X is the midpoint of Segment VZ. VW =5, and VY =20. Find the coordinates of W,X, and Y.

guapka [62]

solution:

$x(a_{x},b_{x})is midpoint of vz\\
a_{x}=\frac{a_{v}+a_{z}}{2}=\frac{-12+22}{2}=\frac{10}{2}=5\\
b_{x}=\frac{b_{v}+b_{z}}{2}=\frac{0+0}{2}=0\\
and,\\
x(5,0)\\
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7 0

3 years ago

I need help with this equation. 9q - 14 + 3(q - 8) = 7 I looked it up and the answer was 3.75, however I don't understand how it

coldgirl [10]

Parentheses first

9q-14+3q-3(8)=7
9q-14+3q-24=7

Combine like terms

9q + 3q - 14 - 24 = 7
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add 38 to both sides

12q - 38 + 38 = 7 + 38

12q = 45

divide both sides by 12

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2 years ago

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Answer:

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Step-by-step explanation:

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