Janet, an experienced shipping clerk, can fill a certain order in 9 hours. Bill, a new clerk, needs 10 hours to do the same job. Working together, how long will it take them to fill the order?

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?

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points

The mass of a marine organism, in pounds, p years after it is born is given by the polynomial function r(p) = -4p2 + 300p. find the mass when p = 20 years.