Two lines, a and b, are represented by the equations given below: line a: 2x + 2y = 8 line b: x + y = 4 which statement is true about the solution to the set of equations? it is (8, 4). it is (4, 8). there is no solution. there are infinitely many solutions. will give 100 points to the best answer.

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.

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

Find the values of y: 3y^3(y^2+ 2/3y)=0