Arectangular corn field yielded 2,200,000 ears of corn. the dimensions of the corn field are 800 yards by 550 yards. how many ears of corn per square yard did the corn field yield?

a) 5 per square yard
b) 10 per square yard
c) 25 per square yard
d) 50 per square yard

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.

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41