Which describes the angles of a rectangle? a. all angles are acute. b. two angles are acute; two angles are obtuse. c. all angles are right angles.

The ratio pv to nrt is plotted against pressure for ch4 at 0°c and 200°c. why does the curve for 0°c drop below the horizontal line for an ideal gas whereas the curve for 200°c does not?

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.