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GaryK [48]
4 years ago
9

As the weight held by a spring increases, the length of the spring increases, proportionally. Suppose a 2-lb weight stretches a

spring to 15 in., and a 12-lb weight stretches the same spring to 20 in. What is the length of the spring with NO weight attached?
Mathematics
2 answers:
lisov135 [29]4 years ago
6 0
The length in the spring would be the same amount of motivation I have to finish this school year
suter [353]4 years ago
5 0
The length in the spring would be 45in.
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Here we need to solve some expressions. Remember the following rules:

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Then, from the left side:

5-2\cdot 7=5-14=\boxed{-9} \\ \\ 5-2\cdot 4=5-8=\boxed{-3} \\ \\ 5-2\cdot 0=5-0=\boxed{5} \\ \\ 5-2\cdot -3=5+6=\boxed{11} \\ \\ 5-2\cdot 10=5-20=\boxed{-15} \\ \\ 5-2\cdot -8=5+16=\boxed{21} \\ \\

from the right side:

-(-4)+3=4+3=\boxed{7} \\ \\ -(6)+3=-6+3=\boxed{-3} \\ \\ -(-8)+3=8+3=\boxed{11} \\ \\ -(-5)+3=5+3=\boxed{8} \\ \\ -(2)+3=-2+3=\boxed{1} \\ \\ -(15)+3=-15+3=\boxed{-12} \\ \\ -(-6)+3=6+3=\boxed{9}

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Step-by-step explanation:

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