A cell phone tower that is 70 meters tall is built on level ground and casts a shadow 230 meters long at a particular moment.
Find the angle of elevation of the sun relative to an observer
standing at the tip of the shadow.

The scatter plot graph shows the average annual income for a certain profession based on the number of years of experience which of the following is most likely to be the equation of the trend line for this set of data? a. i=5350e +37100 b. i=5350e-37100 c. i=5350e d. e=5350e+37100

If a is a nonzero real number then the reciprocal of a is

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.