****URGENT**** MATH HOMEWORK HELP!!!?

Question

Can anyone tell me how to do this.

The answers I have are multiple choice of

540in

270 in

216 in

and 43.2 in

The scale factor of two similar triangles is 5:2. The perimeter of the smaller triangle is 108inches. What is the perimeter of the larger triangle?

Answer 1

i got 43.2

5/2=108/x

cross multiply and you get 216=5x

divided by 5 equals x=43.2

not sure if i'm right but hey i tried! :)

Answer 2

Sgt Pepper is correct. However I have another method.

If the smaller triangle is 108, divide by 2 and get 54.

You divide by 2 because the ratio is 5:2. Next multiply 54 x 5 to get 270.

Answer 3

540

108*5.2=540

Answer 4

Simple, the answer is 270 in. All you have to do is cross multiplication:

5:2 can be written as 5/2 (a fraction). Let x represent the side you want to find. The perimeter of the smaller triangle is 108 in. So

x/108 = 5/2.

108 times 5 = 540

540 divided by 2 =270

x=270 hope that helps.

Answer 5

1. Start out with a proportion: 5/2 = x/108

2. Cross multiply: 2x = 540

3. Divide 2 by both sides: x = 270

Answer 6

5/2 = x/108

cross multiply you get 2x=540

solve for x

x=540/2

x= 270

the perimeter of the larger triangle is 270 in.