What is the measure of angle w in the parallelogram shown?

Select the lengths in centimeters that would form a right triangle

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

What is always true about a positive integer raised to a negative odd power?