This is a quadratic equation. There's a shortcut (two shortcuts really) called the Shakespeare Quadratic Formula (2b or -2b) applicable when the middle term is even:


OK, our problem is


Typically we'd write
but the answers here don't so we won't either.
Answer: C and D
Answer:
70
Step-by-step explanation:
You have to use ratios. If 5 of 12 members bought water, then x of 168 members will buy water.

70 members will buy bottled water.
-0.5 n^2=-18
n^2= 36
n= sqrt (36)=6 or -6
Hope this can help.
Answer:
i dont know sorry
Step-by-step explanation: