Answer: This type of sampling is Simple Random Sampling
Assuming x = dimes, y = quarters


Substitute that into,

Answer : He has 16 quarters.
Hope this helps. - M
a, b, c - side lengths (a ≤ b ≤ c)
If
, then is Obtuse triangle.
If
, then is Right triangle.
If
, then Acute triangle.

Check to see if the sum of the first two sides is greater than the third.

, therefore is Scalene triangle.

It's Obtuse triangle.