WILL GIVE BRAINLIEST 36 POINTS Please show the steps.
Which linear system of equations does the matrix represent M=[87|4] [20|5]
A. 8x+7y+4z=0
2x+0y+5z=0
B. 8x+7y=4
2x+0y=5
C. 8x-7y-4z=0
2x+0y+5zz=0
D. 8x+7y=-4
2x+0y=-5

Geometry: determine whether segment mn is parallel to segment kl. justify your answer. jm 6 mk 3 jn 8 nl 4

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.