Christine took 3 tests and had an average of 76. She has one more test to take and she wants an average of 80. What is the lowes
1 answer:
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Answer:
Step-by-step explanation:
<u>Equation of a Circle</u>
A circle of radius r and centered on the point (h,k) can be expressed by the equation
We are given the equation of a circle as
Note we have corrected it by adding the square to the y. Simplify by 3
Complete squares and rearrange:
We can see that, if r=4, then
Or, equivalently
There are two solutions for :
Keeping the positive solution, as required:
Answer: The slope of the line is
Step-by-step explanation:
The slope of a line can be calculated with the following formula:
Then, given the points and
, you can identify that:
Knowing these values you can substitute them into the formula for calculate the slope:
Finally, evaluating, you get that the slope of that line is: