Half of the mass of the atmosphere is found below an altitude of ___ because the air is compressed by the of the overlying atmosphere. 1st blank: 5 miles,10 miles, 3 1/2 miles, 2 miles
2nd blank: weight, gravity, size, depth

Radii ok and nl are perpendicular to om because of the radius-tangent theorem. by definition of perpendicular, angles kom and lnm are right angles. this means that triangles kom and lnm are right triangles. angle lmn is common to both right triangles, so by the triangles kom and lnm are similar.

What situation is an example of an observational study

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?