In traveling across flat land, you notice a mountain directly in front of you. Its angle of elevation (to the peak) is 5 degrees . After you drive 8 miles closer to the mountain, the angle of elevation is 11 degrees. Approximate the height of the mountain.

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities