Find the polar equation of the conic with focus at the pole, directrix y=3 , and eccentricity of 2.

Find percent notation for 0.008 0.008=

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

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?