He complete this question:
all step and show your work
the table below shows the combination of a dry prepackaged mix and water to make concrete. the mix says for every ૚

gallon of water stir ૟૙ pounds of dry mix. we know that ૚ gallon of water is equal to ૡ pounds of water. using the

information given in the table, complete the remaining parts of the table.

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Long division the problem is 40 ➗ 348 = ?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).