The length of each side of a square is 3 in more than the length of each side of a smaller square. The sum of the areas the squares is 225 in. Find the lengths of the sides of the two squares.
A side of the small square is in.; a side of the big square is in.

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?

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?