For this case we have the following equation:

Where,
w: The weight of a spring in pounds
E: the energy stored by the spring in joules.
Substituting values we have:

Making the corresponding calculation:
Answer:
the approximate weight of the spring in pounds is:
Answer:
credit card? I don't know what the answers are
Answer:
6ft squared
Step-by-step explanation:
12 inches in a foot
72/12=6
2x+2x+(x-15)=180
4x+x-15=180
5x=180+15
5x=195
x=195/5
x=39
Good luck
Keywords
linear equation, variables
Step 1
Define the <u>variables</u>
Let
x-----> number of erasers
y-----> total cost
we know that

------> this is the <u>linear equation</u> that represent the situation
therefore
the answer is
