the average salary for new college graduates with a job is $50,556. Every chick of the University wants to claim that it's gradu
ates earn more than that average. To test this claim, they ran and selects a hundred of their new graduates and find that their average salary is $53,200 with a standard deviation of $20,400. What conclusion should they draw?
1 answer:
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Answer:
Axis of symmetry are lines x=-6 and y=-4, center (-6,-4)
Step-by-step explanation:
Consideer the equation
First, complete perfect squares:
This equation represents a circle with center at point (-6,-4) and radius r=10.
Axis of symmetry are lines x=-6 and y=-4 (vertical and horizontal lines passing through the center).
Answer
x=-5
and
x=1
Explanation
The equation y = 2(x+2)^2 - 18 corresponds to a translation 2 units left and 18 units down, and a and a shrinkage about the x-axis with factor 2.
Making these transformations to y=x^2, we have:
Factoring:
The x-intercept are found when y=0, that is:
and
