There are 10 sweets in a box. There are
n
jelly beans and the rest are cola bottles.
Colin takes 2 sweets out of the box at random.
Write an expression for the probability of getting 2 jelly beans.
Give your expression as a single fraction and simplify fully

3. solve the given inequality and graph the solution on a number line.

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.