fasai is x years old. Fasai has a brother called orma. the sum of the two boys age is 20 years. express the sum of their ages in form of y=a(x-b)²+ c and how old must fasai be to make the product of their age a maximum?

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)

X+y=-4 x-y=2 use elimination with adding and subtraction

52 cm radius = diameter = area = circumference = circumfer