2х - 5 y = - 6
Чx - 3 = - 12.

Step-by-step explanation:

2x -5y = -6 === (1)

4x-3 =-12 ====(2)

From (2), 4x= -12 +3

               4x= -9

                 x= -2

Subst x= -2 in (1), 2(-2) - 5y = -6

                              -4 -5y = -6

                                    -5y = -6 +4

                                    -5y = -1

                                       y = 0.3

answer is 67%

step-by-step explanation:

all of the measures need to be converted to the same measure; such as inches. if you do that it is easy to determine which is the longest, 2500 mm which is approximately 97.5 inches.