A metalworker has a metal alloy that is 20% copper and another alloy that is 55% copper. How many kilograms of each alloy should the metalworker combine to create
80 kg of a 41% copper alloy?

Find the solutions for a triangle with a =16, c =12, and b = 63º

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?

Suppose i flip two identical coins. what is the probability that i get one head and one tail?