It's 7:18... Because you have to because 7 subtract 2:12 is 7, and half is 30 min...
Answer:
3^3×3
81
3^7/3^3
Explanation:
First you should solve the expression you've got there.
(3^6×3^-4)^2
3^6= 3×3×3×3×3×3 the answer is 729
3^-4 A negative exponent means repeated division by the base. So for example 2^-4=1/(2^4)
=1/(2×2×2×2)= 1/16
3^-4= 1/(3^4)
=1/(3×3×3×3)
= 1/81 If you look up the answer in your calculator the answer that will show up will be 0.01234567901
So!
(729×0.01234567901)^2= 9^2
9^2= 81
Now you can look at the following expressions and whichever gives the answer 81 will be correct.
hope it helps!
5/6 ft. : 3/8 ft. =
(5/6) * (8/3) = (5*8)/(6*3) =40/18=20/9=(18+2)/9=2+(2/9)=2,2.....=2,(2)
