It is neccesary because you cannot subtract them without having a common denominator so you have to rename 4 1/2
Answer:
Step-by-step explanation:

Answer:
Slope: -7/2
y-intercept: 5/2
y = -7/2x + 5/2
Step-by-step explanation:
Answer:
first one = 15x+30y-220
second one = 2.4x-4.4
Step-by-step explanation:
9514 1404 393
Answer:
96 cubic feet
Step-by-step explanation:
A volume that is 16 ft by 18 ft by 1/3 ft will be ...
V = LWH
V = (16 ft)(18 ft)(1/3 ft) = 96 ft³
96 cubic feet of concrete are needed.