Astudent converted kilometers to centimeters in the following way:
*picture included*
is this correct? if not, what is the correct way to convert kilometers to centimeters?

There are 20 children in the cast of a class play and 8 of the children are boys of the boys 4 have a speaking part in the play and of the girls 8 do not have a speaking part in the play if a child from the cast of the place chosen at random what is the probability that the child has a speaking part

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)