Aladder (represented in the figure above by the dotted line) placed up against a wall meets the wall at a height of 25 feet. if the ladder is 30 feet long, then what is the approximate angle of elevation that the ladder forms with the ground?

Which of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?

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.

Which strategy is used by public health to reduce the incidence of food poisoning?