Need help ASAP! What is the difference in temperature between −10°F and 30°F? A) 10°F
B) 15°F
C) 20°F
D) 40°F

40°F

Step-by-step explanation:

-10+10°F=0°F+30°F=30°F

answer: this doesnt make any sense especially the photo.

step-by-step explanation:

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation: