When $\frac{1}{1111}$ is expressed as a decimal, what is the sum of the first 40 digits after the decimal point?

Prove that 16^4-2^13-4^5 is divisible by 11.

Apolynomial has two terms. check all of the factoring methods that should be considered. common factor difference of cubes sum of cubes difference of squares perfect-square trinomial factoring by grouping

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad