Mike, an experienced bricklayer, can build a wall in 2 hours, while his son, who is learning, can do the job in 4 hours. How long does it take for them to build a wall together.

drop out of school or go to quizlet, quizlet is better

step-by-step explanation:

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula

7

step-by-step explanation: