Convert 72°f to °c (to the nearest tenth) using one of the following formulas: fahrenheit to celsius celsius to fahrenheit °c = (°f - 32) × °f = × °c + 32.

22.2° C

Step-by-step explanation:

We have to convert 72° fahrenheit to ° Celsius by using formula

Since formula to convert ° F to °C is :

( F - 32) × = C

Now we put  F = 72°

( 72 - 32 ) × = C

C =

C = 22.22 ≈ 22.2° C

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

step-by-step explanation: