A hiker sets out to climb a mountain with a 4000 ft. vertical ascent as shown in the diagram below. If the angle of elevation is 12°, what is the total distance he has to travel to reach the summit, to the nearest whole foot?​

Find the volume of the described solid. the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x. a) 441b) 147c) 864d) 882

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?