Question

I need help ASAP!
I'm confused can someone explain this to me. ( Thank you )

Answer 1

7.) Solve for w (isolate w)

P = 2L + 2W        Subtract 2L on both sides

P - 2L = 2W           Divide 2 on both sides

$\frac{P-2L}{2}=W$   You can simplify it to this(but idk if you have to):

$\frac{P}{2} -L=W$

You could have also done it this way:

P = 2L + 2W    Factor out 2

P = 2(L + W)  Divide 2 on both sides

$\frac{P}{2} =L+W$     Subtract L on both sides

$\frac{P}{2}-L=W$

8.) Solve for t

D = rt      Divide r on both sides

$\frac{D}{r} =t$

9.) Solve for C

$F=\frac{9}{5}C +32$   Subtract 32 on both sides

$F-32 = \frac{9}{5} C$         Multiply 5/9 on both sides to get rid of 9/5

$\frac{5}{9}(F - 32)=(\frac{5}{9})\frac{9}{5}C$

$\frac{5(F-32)}{9}=C$

$\frac{5F - 160}{9}=C$