Answer:

Step-by-step explanation:
Use these formulas

Now solve

Answer:
A:x√ 7x² / 3
Step-by-step explanation:
Answer:
No, she has more than one independent variable.
Step-by-step explanation:
90 degree
or right angle
Hope this helps <span />
Answer: A)
Step-by-step explanation: If You just look at the numbers you can single out which one is correct