Lily is standing at horizontal ground level with the base of the sears tower. the angle formed by the ground and the line segment from her position to the top of the building is 15.7°. the sears tower is 1450 feet tall. find lily's distance from the sears tower to the nearest foot.

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?