The perimeter of a triangle is 42 inches. The lengths of its sides are in the ratio 5:7:2. Find the length of the longest side of the triangle. I need the answer ASAP OMGGG

The length of the longest side of the triangle is 21 inches.

Step-by-step explanation:

Sum of ratios = 5 + 7 + 2

                      = 14

First side of the triangle = ×

                                        = 5 × 3

                                        = 15 inches

2nd side of the triangle =

                                       = 7 * 3

                                       = 21 inches

3rd side of the triangle =

                                      = 2 × 3

                                      = 6 inches

∴The longest side of the triangle is 21 inches.

Hope this helps

it's pretty good could use some work but I like it