Answer:
12
Step-by-step explanation:
12 +30= 42
42+12=54
Answer:
False?
Step-by-step explanation:
I'm pretty sure it's false because wouldn't it simplify to 5y? Sorry if I'm wrong. :)
Answer:
Give the person above me brainliest
Step-by-step explanation:
Well it would be -5, right? Because you lost (-) $5, you would have a negative five dollars.
3 to the negative second power is written like this:

.
When simplifying an expression with a negative exponent, you take a positive version of the exponent, in this case that would be 2, and apply that to the base.
After doing that, we have 9.
The next step is to put one over that number.
In this case, now after doing that the answer is

.
Hope this helps!