If a board game was originally $25 and its on sale for$18, what is the percent of the discount?
2 answers:
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Answer:
Step-by-step explanation:
Comparing to
Where A,B,C are constants
You should see that we need to substitute the with u.
We can always split a regular polygon with sides into
triangles, whose base is the side of the polygon and whose height is the apothem of the polygon. So, the sum of the areas of all these triangles is
where is the number of sides,
is the side length, and
is the apothem length.
So, you just need to plug you values in: in your case, you have
So, the formula becomes
Answer:
A=52.8 miles (approximately)
Step-by-step explanation:
We can assume that this triangle is not a right angle, therefore we cannot use Pythagorean theorem. Let's use the Law of Sines:
Where A is unknown, a=28 miles, b=32 miles, B=87°
Therefore by law of sines we have:
By multiplying 28 to Isolate sin(A) we have:
To cancel out sine on the right, we must multiply both by the inverse sine and so: