The answer is 12y+30.
Twice the width would be 10+4y, so the length is 10+4y.
To find the perimeter, we can do 2(5+2y) + 2(10+4y).
That equals 10+4y+20+8y.
Which, equals 12y+30.
Answer:
9.5
Step-by-step explanation:
Using the formula
P=2(l+w)
Solving for
w=P
2﹣l=43.8
2﹣12.4≈9.5ft
use rise over run to solve your answer
<h2>
Key Concepts</h2>
- Linear systems
- Word problems
<h2>Solving the Question</h2>
In this case, we're given the following information:
- Mother = $9
- Grandmother = $1 per mile
- Isabelle walks <em>x</em> miles, mother pledge = grandmother pledge
The mother's donation of $9 will not change <em>no matter how many miles Isabelle has walked</em>, so if both the mother's and grandmother's donations are equal, they must each owe 9$.
<h2>Answer</h2>
Each donor owes $9.