Prove that the value of expression 9^7 + 3^12 is divisible by 90.

blank x 90

(should be exponent with a base)
answer quick

3^10

Step-by-step explanation:

9^7 + 3^12

Replace 9 with 3^2

(3^2)^7 + 3^12

We know that a^b^c = a^(b*c)

3^(2*7) + 3^12

3^14 +3^12

Factor out 3^12

3^12 (3^2+1)

3^12 (9+1)

3^12(10)

But we need 90 not 10

3^10 * 3^2 (10)

3^10 *9 (10)

3^10 *(90)

Hey there!

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.