Question

You have 80 yards of fencing to enclose a rectangular region. Find the dimensions of the rectangle that maximize the enclosed are. What is the maximum area?

Answer 1

400

Answer 2

how did u get it..

Answer 3

i have did that before.
i know the answer. :p

Answer 4

the method is sooo long. :9

Answer 5

:(

Answer 6

lol wow.. man i wanna see the steps. can u try atleast

Answer 7

Yeah it is long.. Just try.

Answer 8

:/

Answer 9

it's mathlab right?

Answer 10

let me write the method.

Answer 11

Square is the rectangular shape that maximizes area.
perimeter = 4L
80 /4 = L
L = 20


Area = 20^2 = 400

Answer 12

i did a shortcut.

Answer 13

this is what am asked to find.
A.) Find vertex
B.) Find dimesion
C.) Find maximum area

Answer 14

which is which?

Answer 15

u asked for max area.. it is 400.

Answer 16

now u need vertex and dimension?

Answer 17

how do i find them?

Answer 18

finding..

Answer 19

okay

Answer 20

WAIT! which week is that?

Answer 21

week?

Answer 22

im stuck with the vertex! :O

Answer 23

ch.3.1 if thats wat u mean by week?

Answer 24

no, i mean which checkpoint or quiz..

Answer 25

3.1 apllication exercises..

Answer 26

its like the review part of section 3.1

Answer 27

polynomial and rational functions

Answer 28

let me find it..

Answer 29

aren't u doing mathlab? do u?

Answer 30

college algebra

Answer 31

i know that's College Algebra!! but i can't figure it out in which week that question is asked!

Answer 32

am lost with the week part. all i can say am in exercise 3.1 question # 68 chapter 3 polynomial and rational functions.

Answer 33

im sorry, but i can't figure out the the vertex part. :/

Answer 34

:( can u give an example of how u would use week? so i can see if i know

Answer 35

are u in UoP or something or are u doing mathlab?

Answer 36

UoP?? n nah no mathlab

Answer 37

Univ of Pheonix.

Answer 38

what if u skip this and move to others?

Answer 39

okay did figure out the dimensions

Answer 40

Nope, the vertex will give us that. :(

Answer 41

like all the questions i have are asking for vertex

Answer 42

what are others?

Answer 43

You have 200 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area. What is the largest are that can be enclosed?
A.) Find Vertex
B.) Find dimensions L and W
C.) Find maximum area

Answer 44

Among all pairs of numbers whose difference is 24, find a pair whose product is as small possible. What is the minimum product?
A.) Find Vertex
B.) Find numbers
C.) Find minimum product

Answer 45

is that calculus? :O

Answer 46

nope college algerbra: an early functions approach

Answer 47

Wait, i can solve that by looking at the example! :D
im looking on page 307

Answer 48

Yess!!!

Answer 49

P = xy

x - y = 24

Answer 50

Solvinng??

Answer 51

why not.

Answer 52

Are you working on it?

Answer 53

Vertex = (24,0)

Answer 54

how bout B?

Answer 55

im doing this one:
Among all pairs of numbers whose difference is 24, find a pair whose product is as small possible. What is the minimum product?
A.) Find Vertex
B.) Find numbers
C.) Find minimum product

A) (24,0)

B) i think it's 1 and -24.

Answer 56

C.

Answer 57

trying to solve..

Answer 58

If u can wait for a day, i can go through all these and solve your questions tommorw!
how much time do u have?

these are easy, i just need some time to go through all this!

Answer 59

ohh man only today. class tomorrow.. it a total of 6 question but 2 of each are the same. so i u can answer 3 of them i can do tha other 3

Answer 60

ok, let me read again then..

Answer 61

x^2 -24x

a = 1
b = -24

Answer 62

function will have a minimum point.

-b/2a
-(-24)/2(1)
12

This means that the product, P, of two numbers whose difference is 24 is a minimum when one of the numbers, x, is 12 .

Answer 63

y = x - 24
y = 12-24
y = -12

Answer 64

The number pair whose difference is 24 and whose product is as small as possible is 12, -12. The minimum product is 12(-12) , or -144

Answer 65

Correct answer! :D

Answer 66

Wow that was fast

Answer 67

Thank you! :D

Answer 68

next?

Answer 69

post that on left please, this is pretty long thread.

Answer 70

okay so did u answer al A,B and C and how do i post it on the left?

Answer 71

Yes, that's the complete solution! :D

Answer 72

i mean on the left pane.. where other questions are asked.