Answer:
around 21-8 so the equation would look like this (21-8)-6=7
Step-by-step explanation:
you do this because if u put the parentheses around 8-6 you would get 21- (8-6)= 19 because 21 - 2 = 19 so you have to put them around 21-8 to get the right answer
Answer:
14.5 hours/14 hours 30 minutes
Step-by-step explanation:
- The distance between the two cities is 7.25•100=725 because you multiply the scale distance by the scale.
- The number hours is 725/50=14.5 hours because you divide the distance by 50 (the miles per hour).
Just divide the percentage by the amount they are asking
It is good equation. Look, that:
81 = 3 x 3 x 3 x 3 = 3^4.
So you have to solve:
3^x = 3^4
exponents have to be the same, so
x=4
That's mean that A(4) = 81
