Question

kind of confusing word choice. did i set this up correctly? 3m-2w=14m^2 ?

Answer 1

No, the 3-2WIDTH = the LENGTH, not the area :) Try again!

Answer 2

im not exaclty sure on any other way to set it up :( @asett

Answer 3

That's okay! :)

So, we know that 2w-3=l
We also know the area: 14m^2=l*w. So, now you just have to substitute in an equation and solve!

Answer 4

Does that make sense?

Answer 5

ok let me figure this out lol

Answer 6

14m^2=2w-3 ?

Answer 7

Good, but don't forget your other w in that equation:

14=(2w-3)w

Also, drop your units. :)

Answer 8

so then it would be 14=2w^2-3w?

Answer 9

Good! Now, move your 14 to the other side using algebra

Answer 10

0=2w^2-3w-14

Answer 11

Good, now factor!

Answer 12

w=-2, 7/2?

Answer 13

@asett

Answer 14

Good, now we know that we can never have a negative measurement, right? So we drop the -2 and are left with 3.5. Now solve for L

Answer 15

2(3.5)-3=l ?
l=4?

Answer 16

yes

Answer 17

@asett

Answer 18

Wel, it would be, but when we plug those values into to the second equation to check our answer, I get 28. Not 14 like we should. Like me check our math...

Answer 19

well 3.5*2-=4?

Answer 20

14=w*(w2-3)?

Answer 21

We want 14 to equal L times W.

14=w*(2w-3) btw :)

Answer 22

oh yeah

Answer 23

so l isnt 4? is w 3.5?

Answer 24

Oh my word. Thank you. Yes. w=3.5 and l=4. That solves the problem!! :D

Answer 25

xD

Answer 26

thanks for your help

Answer 27

Ha! No problem. Sorry about that goof-up. :)

Answer 28

no its ok it happens xD