Answer:
您能再解釋一下嗎,謝謝
Step-by-step explanation:
$9.47
I just multiplied the total by the refund percentage to get that number. It’s just like finding a tip.
Ertex angle:: x degrees
<span>base angle: x+15
</span>
Answer:
D. 
Step-by-step explanation:
Let be
. To find the equivalent expression we must use the following property:
(1)
Based on this fact, we find the following equivalence:

Hence, the correct answer is D.