1. A pair of 6-sided dice are rolled, and their sum is found. Determine the erpected value of the sum of the two dice

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?

When y’all answer can y’all explain too !