Someone dtandd 4.5 miles from the center of the mountain and to site the angle of elevation to the top of the mountain at 40 what is the hieght of the mountain

If angle ywz = 17, what is angle wxy? ok so i'm confused on this because the triangles are congruent so that means they have the same measurement which would make wxy=17, but don't all triangles have total measures of 180 degress? ?me.

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =