Solve the system by substitution.
- 3x + y + 2z = -13
7x + 2y - 6z=37
x-y + 3z= -14

Atypical mre contains 1,200 calories.if the average solider eats 3 mre per day and is deployed for 15 months how many calories will be consumed by a 44 member platoon of soldiers

Which expression is equivalent to 5r6141 2r+st6

Figure abcde is a regular pentagon. segment ae is located at a (2, 1) and e (4, 1). what is the perimeter of abcde? 4 units 6 units 8 units 10 units