True or False: Both methods correctly verify the trig identity. Question in the screenshot

The cash price of a television is $580.the hire-purchase price of the television is $865.the hire-purchase price is an initial deposit of n% of the cash price and 6 equal monthly payments of $120.find the value of n.

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?

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)