We are given the following numbers: 13, 14, 22, 52, 63, 74. calculate a by adding the numbers and then rounding the sum to the nearest ten. calculate b by first rounding each number to the nearest ten and then adding the rounded numbers. what is a-b?

a-b=10

Step-by-step explanation:

add all the numbers then round

13+ 14+ 22+ 52+ 63+ 77=241

Round to the nearest ten

a =240

first rounding each number to the nearest ten and then add

13+ 14+ 22+ 52+ 63+ 77

10+10+20+50+60+80 =230

b= 230

a-b = 240-230

      = 10

1 and 2

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: