The amount of work (or the rate) done by the first person is 1/21
r = 1/21
2(3x - 4) = 2x + 12
6x - 8 = 2x + 12
4x = 20
x = 5
AB = 3(5) - 4 = 11
AC = 2(5) + 12 = 22
BC = 7(5) - 2 = 35 - 2 = 33
AC:BC = 22:33 = 2:3
First, line up the decimal points, then subtract.
63.740
-00.409
------------
63.331
Answer:
First one: about $1.62 per pound
Second One: about $0.46 per pound
Step-by-step explanation:
9.70/6=1.62
5.50/12=0.46
90 degrees because you can see at the part that is in the middle it is 90 degrees
