2. The sides of a triangle are in the ratio 3:7:10 and the perimeter is 80 inches. What are the lengths of the sides of the triangle?

Can anyone help please ?​

Step-by-step explanation:

3+7+10=20

80/20=4

1 ratio =4

3(4) : 7(4) : 10(4)

= 12 : 28 : 40

The square root of 18 is the only number that is irrational.
negative 10 over 2 is -5 which can be written as -5/1  or 5/-1  (rational)
-13.4 can be written as 13.4 over 1  (rational)
22.7... can be written as fraction:  22  7/9    or 205/9 if you prefer (rational)  

Only the √18 cannot be written as a fraction since it goes on and on without repeating.  There is no number times itself that equals exactly 18.