A metalworker has a metal alloy that is 30​% copper and another alloy that is ​60% copper. How many kilograms of each alloy should the metalworker combine to create 60kg of a ​48% copper​ alloy?

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?