10 Using trig ratios, find the Measure of the angle to the nearest degree: Insert Answer Below 21 ? 39​

Which statements regarding the diagram are true? check all that apply.

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?

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?