Answer:
Step-by-step explanation:
subtract it
Step-by-step explanation:
15=2c+7
15-7=2c
8=2c
8/2=c
4=c
c=4
I think it would take her 1/20 of an hour to do each chore and i dont know what point a is .
Answer:
90
Step-by-step explanation:
formula = 1/3 x base area x height
1/3 x (9 x 2) x 15 = 90
The speed is 8.5 m/s ...........
