The minute hand of a clock is 9.5cm long. how far will the tip of the hand travel in one day

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

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.