Help me please. I don't understand how to do this

a. 781 meters

b. 319 meters

Step-by-step explanation:

by using the pythagorean theorem, a^2 + b^2 = c^2, you can find that 500^2 + 600^2 = the square root of 610000, which rounds to 781.

to find how much shorter it is, add 600 and 500 to get 1100, and subtract 781 from it. you get 319.

x^6

step-by-step explanation:

this is correct because:

x-6=0

0*x=0

so

x^6

the answer is d

hope this