Find the greatest common factor of 20a4 and 25x3?

What aspects of lines have to be diffrent

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.