Question

quick math question!!

Answer 1

@Loser66 please help!!

Answer 2

@Jhannybean help!!

Answer 3

Area=Length x Width
Where Its length is 10 feet longer than the width
Let x be the width
Width=x
Length = x+10

Answer 4

and Area is 75 ft^2, now compute everything in

Answer 5

Area=Length x Width
Plug everything in ^

Answer 6

@wade123 you with me?

Answer 7

yes I'm trying to solve(:

Answer 8

Okay, take your time.

Answer 9

length is 42.5 and width is 32.5 ??

Answer 10

No. Can you type what you did so i can see the error you made?

Answer 11

32.5+42.5= 75 and length is longer than width by 10, how is that wrong?...

Answer 12

Draw a picture :)

Answer 13

i don't get how i am wrong :/

Answer 14

the width would be 32.5 feet,correct?

Answer 15

Now, we dont know the length nor the width. We only know the rectangle is 10 ft longer than width. They didnt tell us what the width is so we'll just leave that with x
Also, the question says that the area is 75. We know that Area is not L+W like you try to do, it's L*W times not addition.

Answer 16

@Jhannybean did a great drawing. This is the visual picture of the question

Answer 17

oh!! sorry! wow such a bad slip up

Answer 18

5 and 15

Answer 19

You're very close.

Answer 20

Very, very close

Answer 21

what?!

Answer 22

width is 5, length is 15

Answer 23

5*15=75

Answer 24

15 is 10 more than 5

Answer 25

When you computed the area
Area=Length*Width
75=(x+10)(x)
0=x^2+10x-75
And you factored those, right?

Answer 26

yea

Answer 27

i don't get how that answer could possible be wrong..

Answer 28

You get (x-5)(x+15)
x=5 and x=\(\color{red}{-}15\)

Answer 29

You were right on the track, but you just skipped the negative sign

But great job overall! :)

Answer 30

-15?...

Answer 31

the length is -15?how is that even possible..

Answer 32

When you worked it out like that , 5*15=75

That was wrong, because it doesn't give you the right answer. What if the area, not 75, let's say 24, it can factor to too many numbers. How are you supposed to know which is the right factorization without computing the area?

Answer 33

You didn't compute it like this.

Area=Length*Width
75=(x+10)(x)
0=x^2+10x-75
You should have factored it like this because the width is not 5 it was x because we dont know what it was, the length is not 15 it was 10 longer than width (x).
We found how the measurement of length times width from computing everything.