34.6k views
1 vote
This is correct? I need help please :(

This is correct? I need help please :(-example-1

2 Answers

6 votes

Answer:

well, we only no that

2l + 2w is 80

(lengths and widths on all 4 sides

and that w * l is A

so the function should be w times what's left for l, but also expressed by something with w

2l + 2w = 80 | -2w

2l = 80 -2w | devide by 2

l = 80 - w

now we can substitute l in

A = w * l

so that we only need w's

A(w) = w * (80-w)

for any w it will give us the area, makes only sense for 0<w<80

User Pacu
by
8.6k points
4 votes
ye that’s right i think

-
a
a
a
a
a
a

a
a
a
a
a
a
User Aaru
by
7.7k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories