Explain why 9^4 = 3^8.

9^4 = [3^2]^4 = 3^8

Step-by-step explanation:

9^4 can be re-written with 3 as the base:

9^4 = [3^2]^4 = 3^8

9^4=3^8

It is bcoz if we multiply 9*9*9*9 then the result will be 6561 and if we multiply 3 to 8 times then the result will be 6561.

so both are same.Thus,9^4=3^8

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315