£399 is shared between Ann, Bill, Chloe and Dave

Write two subtraction equations that are equivalent to 5 + 12 = 17.

What are the steps to solving the inequality 3b + 8 ≥ 14?

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)