Use an algebraic equation to solve the problem.

The sides of a triangle are in the ratio 3 : 4 : 5. What is the length of each side if the perimeter of the triangle is 90 cm?
A. 10.5 cm, 11.5 cm, and 12.5 cm
B. 7.5 cm, 11.5 cm, and 32.1 cm
C. 22.5 cm, 30 cm, and 37.5 cm
D. 19.3 cm, 25.7 cm, and 32.1 cm

Question

Use an algebraic equation to solve the problem. 

The sides of a triangle are in the ratio 3 : 4 : 5. What is the length of each side if the perimeter of the triangle is 90 cm?
  A. 10.5 cm, 11.5 cm, and 12.5 cm 	
  B. 7.5 cm, 11.5 cm, and 32.1 cm 	
  C. 22.5 cm, 30 cm, and 37.5 cm 	
  D. 19.3 cm, 25.7 cm, and 32.1 cm

skullpatrol · Answer

Any ideas?

skullpatrol · Answer

What does the ratio 3:4:5 mean to you?

dan815 · Answer

Do you want just the answer, I can give it to you

skullpatrol · Answer

or do you want to try and learn :)

dan815 · Answer

lol we will let the girl decide!

skullpatrol · Answer

That is @SkiTTleoooo47 's choice

anonymous · Answer

I just really want to finsh my test ...and i learned this along tome ago i just forgot how to do it /.\ If you could just explain it to me that would be nice lol

skullpatrol · Answer

What is the formula for the perimeter of a triangle?

anonymous · Answer

a+b+c? :)

skullpatrol · Answer

Th question states:

 The sides of a triangle are in the ratio 3 : 4 : 5. What is the length of each side if the perimeter of the triangle is 90 cm?

So that means P=a+b+c= 90cm

anonymous · Answer

Got the answer already but thanks for trying to help :)

skullpatrol · Answer

Good job thanks for asking :)