Multiply row 2 by 2, and insert it for row 2: -1
-7
4
-1
-4
-7
4
-2
8.
-4
1
6
3
-4
2 R2 R2
-2
30
8
-4
1
30

Which three lengths could be the lengths of the sides of a triangle? 21 cm, 7 cm, 7 cm 9 cm, 15 cm, 22 cm 13 cm, 5 cm, 18 cm 8 cm, 23 cm, 11 cm

Solve: 3x+y=6 4x-2y=18 show all work !

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.