Answer:
x² + 2x + y² + 4y = 20
(x² + 2x + 1) - 1 + (y² + 4y + 4) - 4 = 20
(x + 2)² + (y + 4)² - 5 = 20
(x + 2)² + (y + 4)² = 25
Therefore, the center is (-2, -4) and the radius is √25 = 5.
Answer:
1. 15
Step-by-step explanation:
I'll help you out with question #1 and follow these steps to help you with solving the rest of the problems.
1. and we know that .
We can substitute to the first equation.
Multiply both sides by 3 to get rid of the fraction.
Now you can solve for , for which the value is 15.
I believe the answer is 6
Answer:
top right graph
Step-by-step explanation:
because on every side of 0 the values are the same
Answer:
for the first she will pay $27 second will pay $28.8
Step-by-step explanation:
hopes this helps!!