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Monica [59]
3 years ago
9

Solve the equation 2.9=7.1 + y

Mathematics
2 answers:
lidiya [134]3 years ago
6 0

Answer:

y=-4.2

Step-by-step explanation:

2.9=7.1+y

2.9-7.1=7.1-7.1 +y

-4.2=y or y= -4.2

alexandr1967 [171]3 years ago
4 0

y = -4.2

If you substitute that value for <em>y</em> into the equation, you'll get 2.9 = 7.1 + (-4.2)... and that is a correct, valid equation. <em>HOPE THAT HELPS!</em>

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3 years ago
Read 2 more answers
Please help.................................................................................................
Sunny_sXe [5.5K]

Answer:

Step-by-step explanation:

L = 3*w + 1                      Given

P = 2*(L + w)                   Formula for Perimeter. Substitute for L    

P = 2*(3w + 1 + w)           Combine

P = 2*(4w + 1)                  

P = 58                             Given

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7 = w

================

Find L

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L = 22

================

Check

2L + 2W  = 58

2*22 + 2*7 =? 58

44 + 14 = ? 58

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The answer checks.

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3 years ago
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