Here is a list of numbers. 17 21
14
17
12
15
16
a) Work out the range of the numbers in the list.
b) Work out the mean of the numbers in the list.

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.