X- the total number of families in Smithville<span>.
(2/3)x - the number of home owning families.
At the same time, </span> the number of home owning families is 480.
(2/3)x=480
x=480*3/2=720.
720 <span>families live in Smithville.</span>
9:6 I think. Because if you subtract 6 from 15 you get 9 and that is how many she needs to finish and she has already finished 6
The first question is letter C
3x + 2 + 1/(2x)
the second question is letter B
x^2 - 12
Answer:
i think correct answer is a
Perform indicated operations on left side
x*x+4x+4x+4*4=9
x^2+4x+4x+16=9 combine like terms on left side
x^2+8x+16=9 subtract 9 from both sides
x^2+8x+7=0 factor
x^2+x+7x+7=0
x(x+1)+7(x+1)=0
(x+7)(x+1)=0
x=-1, -7
