(3x+2) (x-7)
FOIL
first 3x*x = 3x^2
outer 3x*-7 = -21x
inner = 2*x = 2x
last 2*-7 = -14
add them together = 3x^2 -21x+2x -14
combine like terms 3x^2 -19x -14
Answer:
1/12
Step-by-step explanation:
55 minutes
Answer: 9
A=(a+b)/2 *h
135= 30/2* h
135= 15 * h
135/15= h
9=h