Answer:
Wilma has $12.
Step-by-step explanation:
Since we don't know how many hours she worked, we know that Wilma earned 9x dollars at her job. Then she spends $15, so we can just subtract 15 from 9x.
We can just replace the x with 3 to get:
Hence, Wilma has $12.
2,254
Any basic calculator should help you with these equations
Let a, b, c represent the numbers of $8, $10, and $12 tickets sold, respectively. The problem statement gives rise to three equations:
- a + b + c = 500
- 8a +10b +12c = 4700
- a + b - 4c = 0
Solving these equations by your favorite method gives ...
... (a, b, c) = (250, 150, 100)
250 $8 tickets, 150 $10 tickets, and 100 $12 tickets were sold.
_____
After you subtract the 3rd equation from the first to find 5c=500, you can substitute c=100 into the first two equations to get two equations in two unknowns. You know several ways to solve such equations, including elimination, substitution, and graphing, at least. Cramer's method is another viable choice.
Answer:
y = - 4x + 2
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
here m = - 4 and y- intercept = (0, 2) ⇒ c = 2
y = - 4x + 2 ← equation in slope- intercept form
The answer is 6.27. Hope this helps.
