Answer:
Step-by-step explanation:
Answer:
169.58
Step-by-step explanation:
how much she earned:
12.75*38=484.5
deduction:
0.35*484.5=169.575=169.58
I don't understand what you mean by 'mentally' but anyways, here is how to solve it.
(z−12)(z+12)
=(z+−12)(z+12)
=(z)(z)+(z)(12)+(−12)(z)+(−12)(12)
=z^2+12z−12z−144
=z^2−144
Answer:366
Step-by-step explanation:224+142=366
Answer: The answer is 5
Step-by-step explanation:
8a-6=34
You move constant to the right and you change the sign. Like this: 8a=34+6
Then you calculate it which would be 8a=40
You divide both of the sides so it will give your answer <em>a=5</em>