Answer:
9+6i
Step-by-step explanation:
3+6=9
5+1=6
Answer:
-0.2
Step-by-step explanation:
Gradient/slope = 
To solve by elimination you need to solve for each variable, in this case x, y, and z
x = 1/3
y = 7/3
z = 0
Answer:
7/25
Step-by-step explanation:
there are 14 numbers greater than 30 and less than 45
31 32 33 34 ......42 43 44 <=====14 numbers
14 choices out of 50 = 14/ 50 = 7/25