Atree casts a shadow 9 meters long. at the same time, a building 54 meters tall casts a shadow 21 meters long. to the nearest meter, what is the height of the tree?

Find the x-intercepts for the parabola defined by this equation: y=-3x^2-6x+9

The table shows the distances travelled by a paper aeroplane. a. find the range and interquartile range of the data. the range is feet. the interquartile range is __feet. b. interpret the range and interquartile range of the data. __ feet the distances travelled by the paper aeroplane varied by no more than__ feet. the middle half of the distances travelled by the paper aeroplane varied by no more than __ feet.

There are 180 white lockers in a school. there are 3 white lockers for every 5 blue lockers blue. how many lovkers sre there im tje school