Question

PLZ HELP

Answer 1

Number of pieces times weight of each piece=weight of bag
25*20=500grams per 1 bag

200kg=200000g
weight of 1 bag times x bags=weight of all
500x=200000
divide both sides by 500
x=400
400 bags per day


2.
factor out 6
(6)(y^2+2y-5)=0
reemmber how if we had xy=0, assume x and/or y has to be 0?
assume that
y^2+2y-5=0
use quadratic formula
for ax^2+bx+c=0
x=$\frac{-b+/- \sqrt{b^2-4ac} }{2a}$
so the sum is
$\frac{-b+ \sqrt{b^2-4ac} }{2a}$+$\frac{-b- \sqrt{b^2-4ac} }{2a}$=$\frac{-2b}{2a}$=$\frac{-b}{a}$

easy peasy now

1y^2+2y-5=0
-b/a
-2/1
-2 is the sum