Answer:
The number of questions he finished will be q.
37 + q = 78
rewrite this
78 - 36 = q
solve
78 - 36 = 42
Answer:
f=-x^2/2-2
Step-by-step explanation:
It a negative 1 because when have the - sign it a negative number
Answer:


Step-by-step explanation:
We have been given the equation:

And 
Second equation can be rewritten as:

We will solve the equations:
(1)
(2)
Multiply equation (1) by 5 and equation (2) by 3 we get:
(3)
(4)
Now, subtract (4) from (3) we get:


Now substitute
in equation (1) we get:





Answer:
is b
Step-by-step explanation: because x-4y