Answer:
B
Step-by-step explanation:

Hope this helps!
Answer:
Second student ran more than the first student.
Student 1= 9,000 cm
Student 2= 20,000 cm
Step-by-step explanation:
Answer:
65 miles per day
Give my a brain baby
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
When multiplying numbers of the same base the exponents are added
therefor
n + 10 = 20
n = 10