Trenton said that 9 to the power of three times 9 to the power of eight (eight is negative) = nine to the power of 5 (5 is negative). Kendal said 9 to the power of three times 9 to the power of 8 (8is negative) = 1/9 to the power of 5. Determine who is correct. justify your answer

Question

Marina Macdonald

English

9 February, 07:42

Trenton said that 9 to the power of three times 9 to the power of eight (eight is negative) = nine to the power of 5 (5 is negative). Kendal said 9 to the power of three times 9 to the power of 8 (8is negative) = 1/9 to the power of 5. Determine who is correct. justify your answer

+5

Answers (1)

Know the Answer?

Karli Stout · Answer 1

Both are correct.

Trenton

9^3 x 9^-8 = 0.0000169351 or 9^-5. 3 + - 8 = - 5.

Kendal

9^-1 = 0.1111111111 or 1/9

9^-2 = 0.012345679 or 1/9 divide 9. Which is just 1/9 x 1/9. Or 1/9^2.

9^-2 = 1/9^2

Therefore,

9^3 x 9^-8 = 9^-5 or just 1/9^5.