Who invented the multiplication table? pythagoras, plato, davinci

If sin θ=24/25 and 0 less than or equal to θ less than or equal to π/2, find the exact value of tan 2θ. answers; a) -527/336 b) -336/527 c)7/24 d) 24/7

If 24 people have the flu out of 360 people, how many would have the flu out of 900. choose many ways you could use proportion that david would use to solve this problem

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?