90^6=531441000000
80^-4= 1/80^4= 1/4960000
For this, use negative power rule x^-a= 1/x^a
-2(x+7)+3=19
-2x-14+3=19
-2x-11=19
-2x=8
x=4
Answer: btw ratio
Step-by-step explanation:
Answer:
by moving the decimal in both numbers twice to the right and doing normal long division (the decimal in 3 is at the end) to get the answer of 0.72
Answer:
I think that we cannot find either x or y
Step-by-step explanation:
Because we need at least two equations
