Answer:
see explanation
Step-by-step explanation:
Let u = x² ( choice of variable is flexible ), then
4u² - 21u + 20 = 0 ← expressed as a quadratic
This can now be solved for u and converted back into terms of x
It take 640 acres to make 1 mile
Answer:photo math
Step-by-step explanation:
Answer:
15:1
Step-by-step explanation:
225:15
÷15 both sides
15:1
20%, because if 65 is 100, then 52 is 80% out of 65; so 100 - 80 is 20
