Answer:
student A- can run 2/3 mile in six minutes
1/9 mile/min
student B- can run 1/2 mile in 4 minutes
Speed=1/8 mile/min
student C- can run 4/5 mile in 8 minutes
speed=1/10 mile/min
Step-by-step explanation:
60x55= 3300 there are 60 seconds in a minute and there are 55 minutes so you simply multiply the seconds by the minutes
Is C and D because 10x^2-6x^2=36+64
4x^2=100
x^2=25
x= -5 or 5
Answer: 
Step-by-step explanation:

a = base
h = height

Solve the parentheses squared first.

2 and 36 can be simplied
2/2=1
36/2=18


Rounded to the nearest whole number... 