Which statements are true about greatest common factors? Check all that apply. The GCF is the largest number or variable that divides evenly into all the terms.
The GCF is always an even number.
The GCF is the largest number or variable that divides evenly into most of the terms.
The GCF is always an odd number.
The GCF is the number and/or variable that can be undistributed in an algebraic expression.

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Acircle has a circumference of 28.36 units what is the diameter of the circle

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?