Respuesta :
Let's see:
[tex]\frac{5}{9}.(f - 32) = c[/tex]
9 is the denominator, if we pass it to the other side it will be as multiplication.
[tex]5.(f - 32) = 9c[/tex]
Now, if we pass 5, the numerador, it will go as denominator.
[tex]f - 32 = \frac{9}{5}.c[/tex]
Now just add 32 in both sides
[tex]f - 32 + 32 = \frac{9}{5}.c + 32[/tex]
[tex]f = \frac{9}{5}.c + 32[/tex]
Ok, this is the formula to discover the temperature in fahrenheit, now let's see the procedures:
A - Multiply both sides of the equation by 9/5, ok
Ad 32 to both sides of the equation, ok
B - Multiply 50 by 9, ok
Divide the answer by 5, ok
Add 32, ok
So both procedures will give the correct temperature.
Answer:
A
Step-by-step explanation:
Given
50oC
Formula
5/9(F - 32) = C
5/9 * 9/5 (F - 32) = 7/5 * 50
F - 32 = 70 Add 32
F - 32 + 32 = 70 + 32 Add
F = 102 This is the correct answer.
=========================
Multiply 50 * 9 = 450
Divide by 5 = 90
Add 32 = 122
This is not correct. Only A works.