Jack looks at a clock tower from a distance and determines that the angle of elevation of the top of the tower is 40°. john, who is standing 20 meters from jack as shown in the diagram, determines that the angle of elevation to the top of the tower is 60°. if jack’s and john’s eyes are 1.5 meters from the ground, how far is john from the base of the tower? round your answer to the nearest tenth.

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

17 in long 1.3 ft wide and 8in high what is the volume

70 points ! pls 2. given the following two sets of data what is the union of the two sets and what is the intersection of the two sets. set a = {1, 2, 3, 4, 5, 6, 7, 8, 9} set b = {2, 4, 6, 8, 10, 12, 14} 3. given a regular deck of cards. describe a way of pulling cards that would create a dependent event and then one that would create an independent event. 4. what is the probability of drawing a red card and then drawing a spade without replacing the card that was drawn first?