Question

The length of a rectangle is 2 inches more than the width. The perimeter is 40 inches. Find the length and width.

Answer 1

l=2+w
P=2(l+w)=40
s solve for l an w

Answer 2

how? i dont understand

Answer 3

perimeter=2(l+w)
length=2+w
perimeter=2(2+w+w)
=2(2+2w)
=4+4w=40
4w=36
w=36/4
w=9
l=2+w
l=11

Answer 4

The length of a rectangle is 7 inches more than three times the width. The perimeter is 94 inches. Find the length and width.

Answer 5

l=2+w...........................1
2l+2w=40.....................2
plug in l from equation 1 into equation 2

Answer 6

3h by 4w =5

Answer 7

l=7+3w
2l+2w=94

Answer 8

OK. let's draw a rectangle... We have length=7+3w and width=w. So I just labeled the length to contain a variable 'w' so we can make an equation. The definition of a perimeter is 2 times the length and width to make P= 2L + 2W. I substitute L or length= 7+3w since the question gave us "7 inches more than three times the width", which basically translates to that. So the equation becomes P= 2(7+3w) + 2w = 94. If you solve this equation for w, you'll get 8w=80, which makes w=10. We found the width! now we want to substitute w to our original equation length which was 7+3w. So 7+3(10)=37.

So the answer is 37 for length and 10 for the width or whatever you'd like to call what is length of width.

Hope this helps!

Answer 9

oops, hang on. I think I made a mistake. lol. I forgot to factor in the perimeter. Hang on guys.....

Answer 10

11+11+9+9=40

Answer 11

Oh wait, there are two questions. I looked at the second one. The original question I did not answer. You can always put in the numbers back into the equations to get the total perimeter to get a total of 94 inches, which is the perimeter given in the second question.

Answer 12

understand sasha22 ....

Answer 13

The perimeter is the total distance around the outside of a 2D shape

Answer 14

11L x2+9Wx2=40

Answer 15

the 3 4 5 is a trangent for another math question, sorry.