Question

What is an equivalent expression for this problem?

A) 0.2d^14
B) -2/9d^4
C) 72/d^14
D) 2/9d^14

Answer 1

answer: D) 2/9d^14
explain: the rest don’t work

Answer 2

Explanation:

from what I could see in the picture :

4d^-5 / 18d⁹

remember, a negative exponent simply means 1/...

so, we have here actually

4(1/d⁵) / 18d⁹ = 4/d⁵ / 18d⁹ = 4 / 18d⁵d⁹ =

= 4/18 × 1/d⁹d⁵ = 2/9 × 1/d¹⁴ =

= 2/9 × d^-14

please pick the correct answer option. it seens you made a number of mistakes writing them.

my guess would be D (and you skipped the minus sign of the exponent).