Answer:
1/125
Step-by-step explanation:
(5^-2)(5^-1) = 5^-3=1/5^3=1/125
move the 3 to the 7 side. it will become negative.
9x-5x=7-3
4x=4
x=1
Answer:
3 Liters of the 85% Solution
Step-by-step explanation:
You have to draw your buckets. I can't on computer so imagine the fraction bar is the bottom of the buckets.

Then we multiply the top of the buckets with the bottom:
85x+330=65x+390
Now we simplify and solve
20x=60
x=3
You need 3 liters of the 85% solution!
Answer:
It was answered correctly.
Step-by-step explanation:
Parenthesis means mutiplication so you can do iy rhat way or 4(c)^2=4×c^2.
Answer:
2 and 3
Step-by-step explanation: