I think the answer is (-2-\sqrt(10))/(3)
i know that looks wierd...sorry...i hope this helps
Answer:
a < -4
I apologise if it is wrong.
x = 160 gal
y = 80 gal
160 gallons of water and 80 gallons of premium antifreeze solution must be mixed.
Dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. remember KFC: keep, change, flip.
a/b ÷ c/d *use KFC* = a*d/b*c
=ad/ bc
2/7 ÷ 4/5 = 2/7*5/4
=10/28
(simplify)
=5/14
