As Freda gazes at the edge of the Grand Canyon, she decides to try to determine the height of the wall opposite her. Using an app on her phone, she determines that the top of the wall is at a 38° angle above her, while the bottom is at a 46° angle
below her, as shown in the diagram at right. If the base of the wall is 253 feet from the point on the ground directly below
Freda, determine the height of the wall opposite her.

14 pointslet x be the seats in the small van and y the seats in the large van. how many seats does the large van have? a company uses two vans to transport worker from a free parking lot to the workplace between 7: 00 and 9: 00a.m. one van has 9 more seats than the other. the smaller van makes two trips every morning while the larger one makes only one trip. the two vans can transport 69 people, maximum.how many seats does the larger van have?

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

What is the absolute value of the complex number -4-sqrt2i