a metal worker has a metal alloy. that is 20% copper and another alloy that is 65% copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 56% copper alloy

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?

It takes an ant farm 3 days to consume 1/2 of an apple. at that rate, in how many days will the ant farm consume 3 apples

Idon't want to fail summer school.the probabilities of contamination in medicine capsules due to the presence of heavy metals and different types of microbes are given in the table.the probability of capsule b having microbial contamination is (the same as, greater than, less than) the probability of capsule d having it.