Answer:
√180 or 5√6
Step-by-step explanation:
Plug in: a^+b^2=c^2
a^2+12^2=18^2
a^2+144=324
subtract 144 from both sides
a=√180
a= 5√6
Im not sure but i found the answer to be 19% full and 32.4 minutes to charge.
It represents miles per minute or in the case 1/5, or m/5
The answer to this is (x + 7)(x + 8)