Go Math grade 6 standards practice workbook common core edition pages 101 & 102

Mathematics

1 answer:

notka56 [123]3 years ago

3 0

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9x-2y=-21 2x+3y=16 Substitution

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$9x-2y=-21 \\\\ 9x=-21+2y \\\\ => \boxed{x=\frac{2y-21}{9}} \\\\ 2x+3y=16 \\\\ 2*\frac{2y-21}{9}+3y^{(9}=16^{(9} \\\\ 2(2y-21)+27y=144 \\\\ 4y-42+27y=144 \\\\ 31y=144+42 \\\\ 31y=186 \\\\ \boxed{y=\frac{186}{31}=6} \\\\ x=\frac{2*6-21}{9} \\\\ x=\frac{12-21}{9} \\\\ x=\frac{-9}{9} \\\\ \boxed{x=-1}$

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3 years ago

Pls help...............

Alex Ar [27]

Answer:

You chose the right one

Step-by-step explanation:

i hope this helps :)

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2 years ago

Write 187.023 in word form

riadik2000 [5.3K]

One hundred eighty-seven and twenty-three thousandths
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3 years ago

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Paul has $145 in his savings account. He earns $36 a week mowing lawns. If Paul saves all of his earnings, after how many weeks

Lemur [1.5K]

Answer:

Paul will have no more than $ 450 in next 8 weeks.

Step-by-step explanation:

From the information given on statement, we know that Paul saves all of his earnings weekly. Then, the money save is equal to the sum of initial amount ( $C_{o}$ ), measured in monetary units, and week earning ( $R$ ), measured in monetary units, multiplied by a number of weeks ( $n$ ), dimensionless: