Answer: 7.4a+b
1. distribute
=5a+(2.4)(a)+(2.4)(0.5b)+−0.2b
=5a+2.4a+1.2b+−0.2b
2. combine like terms
=5a+2.4a+1.2b+−0.2b
=(5a+2.4a)+(1.2b+−0.2b)
=7.4a+b
Keiko has 20 1/4 cup portions of milk.
Answer:
D
Step-by-step explanation:
The picnic area is 20 inches wide in the drawing in her scale of 1 inch : 4 yards.
<h3>What is unitary method ?</h3>
Unitary method is a technique for first solving the value of a single digit unit and from there we can find the value of any given unit.
According to the given question lillian drew a scale drawing of a county park. the scale she used was 1 inch : 4 yards.
The picnic area is 80 yards wide in real life.
∴ The width of the picnic area in here drawing in inches will be
= 80/4 inches.
= 20 inches.
learn more about unitary method here :
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Answer: Mechanical Pencils are $0.60
Colored Pencils are $0.80
Step-by-step explanation:
18c+22m=27.60
c-m=.20
+m +m
so c= .20+m
Susitituete 18(.20+m)+22m=27.60
3.6+18m +22m=27.60
40m=27.60
40m=24
m=.60
c=.20+(.60)
c=.80