Question

The length of a rectangle is 10 cm less than it's width. what are the dimesons of the rectangle if it's area is 75 square cm..
The length of the rectangle is _?__ cm
The width of the rectangle is _?__cm

Answer 1

let the width be x

given length is 10 cm less than it's width
hence length = x-10

Answer 2

correct?

Answer 3

so the length is going to be x-10?

Answer 4

yes

Answer 5

what about the width?

Answer 6

width has been taken to be x

Answer 7

multiply x-10 and x

equate them to 75

Answer 8

I'm confused what?

Answer 9

\[\large{( x-10 )(x)=75}\]

Answer 10

so that is my answer for the width?

Answer 11

no solve the given equation for x

Answer 12

-5, 15 ??

Answer 13

\[\large{x^2-10x = 75}\]
\[\large{x^2-10x-75=0}\]
\[\large{x^2+15x-5x-75=0}\]

Answer 14

5 , - 15

Answer 15

check it once again

Answer 16

so my width is -5, 15??

Answer 17

No your width x = 5 since -15 is not possible for x

Answer 18

the computer said that was inncorrect?

Answer 19

oh wait

Answer 20

width = 15

Answer 21

and the length is x-15 right??

Answer 22

length = x- 10 = 15 - 10 = 5

Answer 23

so my length is 5 and width is 15

Answer 24

??

Answer 25

right