Answer:
21
Step-by-step explanation:
This is a substitution question,we are to substitute a given value in place of a certain letter
So let's solve
2x^2-x
And since x is given to be -3
So let's substitute
2(-3)^2-(-3)
2(9)-(-3)
18+3
21
So the final answer is 21
30÷5 (the 5 parts from 2:3) is 6 so the first group gets 12 (2x6) and the second gets 18 (3x6)
Hello,
The answer is A or y= 3/2x+9
How to solve;
The formula: Y=mx+b
Now solve the problem: 3x-2y=-18
Subtract -3x from both sides.
Now we have -2y=-3x-18
So divide both sides by y to get y by it self.
-2/-2=-3x-18/-2
Simplify and the answer is y=3/2x+9
Thus answer A
Hope that helps have a great day.
Answer: 
Step-by-step explanation:
If you meant to solve for "z", then refer to the attachment below.
