The square root -38 is sqrt(38)i, or approximately 6.2i.
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Answer:36 
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Step-by-step explanation:
Given that 
is isosceles triangle.
A isosceles has two sides equal an the third side is the base.
So,
...(i)
Given that length of the base 
Given that the perimeter of the triangle is 
So,
...(ii)
Using (i) and (ii),
The first graph is the answer.
The answer is B.
The mean is the average so, in this case, the average age of the voters. To get the average the person must take 100 random people who voted, as taking any others will not give them the average age.
Answer: We are missing some data here, but it appears to be a right triangle question. Assuming that triangle ABC is a right triangle, the measure of angle B would be about 63.26 degrees.
If you draw a right triangle ABC with the given information, you will see that we have an adjacent side and hypotenuse with regard to angle B.
Therefore, we can write and solve the following cosine ratio.
cos(B) = 9/20
B = 63.26 degrees
