Simplify this expression (3)^10 (3)^-9

3

Step-by-step explanation:

First, simplify the powers.

(3)^-9 = (1)/(3^9)

Multiply across.

(3^10) x 1 = 3^10

(3^10)/(3^9)

Note that when you divide power signs, as long as the base is the same, you can subtract the power sign.

(3^10)/(3^9) = 3^(10 - 9) = 3^1 = 3

3 is your answer.

~

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.