Answer:
7x²-12x-10
Step-by-step explanation:
(5x²-8x+1) + (2x²-4x-11)
combine like terms
7x²-12x-10
Answer:
like a month she earns $462.30
so if you want like how many she earns in 4 years then,
just do $462.30×4
after calculation answer will come.
move the decimal point 2 places to the left
42.6 / 
= 0.426
7 = r^1/2 is the same as saying 7 = square root of r. So, to get rid of the square root sign on the r, you need to square it, and when you do something to one side of the equation, you have to do the same to the other side. So after squaring both sides, you get 49 = r.
Alright so
5^4m = 5^12
cancel the bases
4m=12
divide by 4
m=3
