What is power of mean in math?

What does ahn nyoung mean? What is the average keystrokes per hour for data entry? 151? What percent of 80 is 116? Zeros are always considered scientific digits when they are to the right of the decimal point and when they are between a decimal point another digit as in 13.04 true or false? What is the GCF of 42 63 105? What is 5.67 in fraction form? How many significant figures are in 1.4030? How many yards of concrete are in a eight feet by sixteen feet by four inch deep pad? How many zeros do you add to a number when you multiply the number by 10? What is next in this sequence 3 4 6 9 13? What is 126 times 19? In Europe do they still use Roman numerals? What is 1 out of 4 of a year? What is a 5-sided polygon that has exactly one pair of parallel sides? Do you write out one fourth in a sentence? How many centimeters is a nickel? Interval between two events? How do you figure the square feet of a rectangle trapezoid? Is four eights equal to two six?