A firefighter is trying to get to the roof of a 45ft. building. He brings out his ladder
and extends it as far as possible. It creates
an angle of 65° with the ground. How long
is the ladder that is needed to reach the top
of the building?

Step-by-step explanation:

c

step-by-step explanation:

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.