Mathematics, 29.07.2019 20:00 holmesleauja
1.add (5x4 + 3x3 -x2 +16x)+(2x3 -3x2 -10x4 +x -1) ihave tried every possible correct answer and none of them seem to be right on any of these 3 questions2.subtract the following polynomials (5x4 + 3x3 -x2 +16x) - (2x3 -3x2 -10x4 +x -1) 3.multiply (5x4 + 3x3 -x2 +16x)(x5+2x-1)
Answers: 1
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Mathematics, 21.06.2019 15:00
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.
Answers: 2
Mathematics, 21.06.2019 17:00
Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.
Answers: 1
1.add (5x4 + 3x3 -x2 +16x)+(2x3 -3x2 -10x4 +x -1) ihave tried every possible correct answer and none...
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