In rectangular form, we have the coordinates 
Answer:
Step-by-step explanation:
The answer is x=-4 the work is shown on the pic
They forget to say "not to scale". I'm guessing this is trig because I don't see another way to do it.
Let's consider x=chord PQ first. By the Law of Cosines

We have an isosceles triangle formed by two radii of 9 cm and x=PQ. By the Law of Cosines again,





The area of the circle is the fraction given by the angle,



Answer: 24.7 sq cm
Answer:
225
Step-by-step explanation:
Answer:
326
Step-by-step explanation:
Given: Microscopes. Each one costs $200 and resells online for $526.
To find: What is the mark-up percentage?
Solution: Simply take the sales price minus the unit cost, and divide that number by the unit cost. Then, multiply by 100 to determine the markup percentage.

Net Profit Margin = 61.98%
Net Profit = $326.00
Profit Percentage = 163.00%
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