Distributive property or
use FOIL (FOIL is just an acronym to help you remember how to multiply binomials)
distributive property
a(b+c)=ab+ac
(b+c)a=ba+ca
distribute
(-3s+2t)(4s-t)=
(-3s+2t)(4s)+(-3s+2t)(-t)=
(-3s)(4s)+(2t)(4s)+(-3s)(-t)+(2t)(-t)=
-12s^2+8st+3st-2t^2=
-12s^2-2t^2+11st
if you want foil
FOIL (just tells wich terms to multiply)
First
Outer
Inner
Last
exmaple
with
(a+b)(c+d)
First: a times c
Outer: a times d
Inner: b times c
Last: b times d
then add them
(-3s+2t)(4s-t)
First: -3s times 4s=-12s^2
Inner: 2t times 4s=8st
Outer: -3s times -t=3st
Last: 2t times -t=-2t^2
add them
-12s^2+8st+3st-2t^2=
-12s^2+11st-2t^2
same
a.) N
b.)A
c.) N
d.) S
e.) S
f.)A
g.) S
i don’t need anything, just helping you all! hope it’s correct!
Answer:
y=9.25
Step-by-step explanation:
1. Plug in x=0.3 into the equation.
5(0.3)+2y=20
2. Simplify
1.5+2y=20
2y=18.5
3. Isolate y on the left side of the equation by dividing by 2 on both sides.
y=9.25
2 3/20 ,2 9/20, 2 1/2,2 11/20,2 4/5
Therefore gelatin would be a homogeneous