C and E are the right ones
Whenever it says divide just flip the fraction and change it to multiply
Answer:
he made a good choice, the width is: 4 inches
Step-by-step explanation:
12 x 8 x _<u>4_</u> = 384
Answer:
Pi: Irrational
2/9: Rational
225: Rational
0.167: Irrational <--- fourth one
Step-by-step explanation:
Not sure about the 4th one, but the others are good :)

You wan't to get it into a format of (x+a)(x+b)=0
where a+b = 3 (the one from the 3x)
and where a*b= -4 (from the last -4)
(x+4)(x-1)=0
See how 4+(-1) = 3 and (4)(-1) = -4
now find what values of x would make the equation equal 0
x=-4
(-4+4)(-4-1) = (0)(-5) = 0
x=1
(1+4)(1-1) = (5)(0) = 0