Answer:

Step-by-step explanation:


Divide both sides by 4:


A = 9 (Sorry I can't do the other ones, I haven't learned those ones yet) Hope this helps!! :P
lol it's so hard I can't proses
<span>D. r + (-r) = 0
</span>
The additive inverse<span> of a number a is the number that, when added to a, yields zero. This number is also known as the opposite.</span>
Answer:
The answer would be 30.
Step-by-step explanation:
Calculating 9×100÷30 equals 30 and that would be your answer.