from the top of a cliff the angle of depression of a boat is 24°. the boat now sails 50 metres towards the cliff and the angle of depression now is 83°. find the height of the cliff?

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

Simplify the expression. -2/5(10+15m-20n)