Michael has a summer job as a bricklayer’s assistant. He is responsible for mixing the concrete. Concrete is made of cement, sand, and gravel in a ratio of 1:3:4 by mass. Michael needs to make 80 kg of concrete. How much cement, sand and gravel does Michael need to mix together to make 80 kg of concrete?

The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. complete parts (a) and (b) below. business degrees nonbusiness degrees total male 189131 634650 823781 female 169539 885329 1054868 total 358670 1519979 1878649 (a) find the probability that a randomly selected student is male, given that the student received a business degree. the probability that a randomly selected student is male, given that the student received a business degree, is nothing. (round to three decimal places as needed.) (b) find the probability that a randomly selected student received a business degree, given that the student is female. the probability that a randomly selected student received a business degree, given that the student is female, is nothing. (round to three decimal places as needed.)

The reflexive property of congruence lets you say that ∠pqr ≅

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?