There is no solution for the first one
if you eliminate y you get 2 equations
-13x - 13z = -25
-13x - 13x = -15
- there is no solution to theses
a23 means the element in the second row and the 3rd column
so its -5
2x² + 5x - 18
the answers is D)
brainliest?
1/2(4+X)+2=16
2+(0.5 x X) + 2 = 16
4 + (0.5 x X) = 16
0.5 x X = 12
X = 24
idk if u understand my working out - message me if u dont
hope it helped tho :)
Answer:
1) 5 are absent and 20 are present
2) $42.50
3) $155.29
4) $535.50
5) $107.52 per year and $8.96 per month
Step-by-step explanation:
