The potential energy, p, in a spring is represented using the formula p = p equals startfraction one-half endfraction k x squared. kx2. lupe uses an equivalent equation, which is solved for k, to determine the answers to her homework.

Step-by-step explanation:

The question is

Which equation should she use?

we have the formula

Solve for k

That means ----> isolate the variable k

Multiply by 2 both sides

Divide by x^2 both sides

Rewrite

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1