Answer:
A. Cube root
Step-by-step explanation:
20×30would equal600.All you have to do is take the two cerca out of the way. Then you multiply2×3and you get6. Then you add the two ceros and get 600.
Ex.: 20×30:20- 0=2+30- 3=2×3=6+00=600
tadah
Answer:

Step-by-step explanation:
given that the side of the square is 4a
The expression for the area can be solved by
1. subtracting 5 from the sides of the square i.e (4a-5)
2. Solving for the area of the square using


opening the bracket and expending we have

the expression is 
please add the rest of the question
d=65t
t=1.5
d= 65 * 1.5
d= 97.5 miles
Answer = 97.5 miles