SOLUTION: The perimeter of a rectangle is 54 cm. It's length is 6 cm. What is it's width. solve algebraically and arithmetically. p = 2(l + w) 54 = 2(6 + w) 54 = 12 +2 w -12 -12 42

Question 863498: The perimeter of a rectangle is 54 cm. It's length is 6 cm. What is it's width. solve algebraically and arithmetically.
p = 2(l + w)
54 = 2(6 + w)
54 = 12 +2 w
-12 -12
42 = 2w
w = 21
second problem Jerry is 50 inches tall and is growing at the rate of 1/24 inch per month. Adam is 47 inches tall and is growing at the rate of 1/8 inch per month. If they continue to grow at the same rates for the next 4 years, in how many months will they be the same height?
solve 2 different ways
specify what basic mathematics concept/relation is used to support your solution

Answer by josgarithmetic(39623) (Show Source): You can put this solution on YOUR website!
Helping just with your second question.

x is for months, and y is for how tall.
This is a simple two dimensional linear system problem.
Jerry starts at 50 inches and Adam at 47 inches in tallness.
Jerry's slope or growth rate is inches per month and Adam's is inche per month.

Their tallness equations are:
Jerry:
Adam:

You want to know the point of intersection for these two equations.
Find this intersection point, either algebraically or graphically.
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