Question

The formula to convert celsius to fahrenheit is F=9/5c+32. convert 87° F to celsius .Round to the nearest degree

Answer 1

Answer:

31°C

Step-by-step explanation:

The formula to convert Celsius to Fahrenheit is F=9/5c+32.

To convert  87° F to Celsius plug in F = 87 in the above formula, we get

87 = $-\frac{9}{5} c + 32$

Now we have to isolate the variable and the constant.

Subtract 32 from both sides, we get

87 - 32 = $-\frac{9}{5} c + 32 - 32$

55 = $-\frac{9}{5} c$

Multiply both sides by the reciprocal of -9/5

Which is called inverse operations to find the value of C.

The reciprocal of -9/5 is -5/9

$-\frac{5}{9} *55 = -\frac{9}{5} *-\frac{5}{9} C$

C = 275/9

C = 30.5°

To round off to the nearest degree, we get

31°C

Answer 2

The answer would be 30 or 31 degrees.