Andrew has a moneybox in which he saves all of his R5,R2 and R1 coins. The coins are in the ratio 2:5:7 respectively. If he has a R90 in R2 coins ,how many R5,R2 and R1 coins has he saved?

Toyland is having a sale. all items are 20% off. how much will you save on an item that usually sells for 95$ explain your

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)