Question

Can somebody help me with this???????

Answer 1

`\large\boxed{a.\ -34.4^oC}`

Explanation:

STEP 1:

Solve for C:

`1.8C+32=F` subtract 32 from both sides

`1.8C=F-32` divide both sides by 1.8

`C=(F-32)/(1.8)`

STEP 2:

Put F = -30 to the equation:

`C=(-30-32)/(1.8)=(-62)/(1.8)=-34.444...\approx-34.4`

Answer 2

The first thing you have to do is substitute F in the equation for -30. Now you have to isolate the variable, C, by first subtracting 32 on both sides. You will end up with -62 = 1.8C. Now you do -62/1.8 to determine the value of C. You will end up with -34.4. A is your answer!