Answer:

Step-by-step explanation:
Using the rule of exponents
=
, then
=
= 
Your answer is D.
Because there are no negative reciprocals, therefore there are no right angles.
Answer:this one is hard
Step-by-step explanation:
Answer:
<u>k-4</u><u>=</u><u>9</u>
<u>k</u><u>=</u><u>9</u><u>+</u><u>4</u>
<u>k</u><u>=</u><u>1</u><u>3</u><u> </u>
<u>¥</u><u>¥</u><u>¥</u><u>¥</u><u>¥</u><u>¥</u>