There are 60 new houses being built in a neighborhood. last month, 1/4 of them were sold. this month, 2/5 of the remaining houses were sold. how many houses are left to be sold

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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?

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12