Answer:
hello. x =3
Step-by-step explanation:

hope you u understand
Answer:
10
Step-by-step explanation:
you derive the answer by taking the total length of the pipe (7 1/2 foot), divided by the length of each piece (3/4 foot).
7 1/2 ÷ 3/4 = <u><em>10</em></u>
Answer:
5
Step-by-step explanation:
3a+5=20 -5
3a=15 /3
a=5
First, you simplify 12x=3y+7. Subrtact 7 from both side, get 12x-7=3y. Divide 3 from both sides, get y=4x-(7/3). Your 2 equations are y=4x-1 and y=4x-7/3. The 2 lines are parallel, since they have the same slope but different b's.