Solve the following system of equations using the substitution method.

1 answer:

7 0

X=2y
2x+5y=9

substitute the x=2y into the second equation
2(2y)+5y=9
multiple the 2y by 2. 4y+5y=9
combine like terms. 9y=9
divide the 9 out from both sides. y=1
plug the y back into the first equation
x=2(1)
multiply. x=2

your answer is: x=2
y=1

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13 + k3= 11 Show work pls

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Answer:

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So the best way to do these is concentration1 (%) × volume1 = concentration2 × volume2
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This is false for example, the GCF of 13 and 26 is 13, an odd number.

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or
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3 years ago

Read 2 more answers