Ask
your own question, for FREE!
Mathematics
84 Online
OpenStudy (anonymous):
You want to order a rectangular bulletin board to mount on a classroom wall that has an area of 90sq ft. Fire code requirements allow for no more then 30% of a classroom be covered by said board. If the length is 3 times as long as the width, what are the dimensions of the largest board that meets the requirements?
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (campbell_st):
let w = width 3w = length so the area of 90 sq ft is equal to 90 = w(3x) or 90 = 3w^2 you now need to solve for w
OpenStudy (campbell_st):
once you have the width then triple it to get the length
OpenStudy (anonymous):
area of the largest board =90*30/100=27. length=l,width=w ie,l=3w then 3w^2=27 this gives w=3 and l=9, hence its dmensions are 9*3 sqft.
OpenStudy (anonymous):
I think I understand... is there any tricks to breaking all this down?
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
urlocalgay:
The probability of selecting a purple balloon is 0.24. The probability of selecting a purple balloon, given that the balloon has glitter, is 0.
1 hour ago
2 Replies
0 Medals
persephone:
The emergency notification echoed in the theater as everyone reached for their phones to discover what was interrupting their movie.
1 hour ago
10 Replies
0 Medals