Mathematics, 13.05.2021 16:50 samueldfhung
Chose all of the equations that have infinitely many solutions. please hurry
A. 3(x + 4) = 2x - 7
B. 3x + 8 - x = 3 + 5 + 2x
C. 1/2 (4x - 8 ) = 2x - 4 + 12
D. 5-4x + 7 = -2( 2x - 6 )
E. 4-3x - 8 = 2x + 7-5x
Answers: 3
Mathematics, 21.06.2019 18:50
The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103
Answers: 3
Mathematics, 21.06.2019 19:20
Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.
Answers: 1
Mathematics, 21.06.2019 20:50
An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.
Answers: 3
Mathematics, 21.06.2019 23:30
Simplify (8x2 − 1 + 2x3) − (7x3 − 3x2 + 1). −5x3 + 11x2 − 2 5x3 − 11x2 + 2 x3 + 2x2 + x3 x3 − 2x2 − x3
Answers: 1
Chose all of the equations that have infinitely many solutions. please hurry
A. 3(x + 4) = 2x - 7
History, 26.06.2021 22:40
Health, 26.06.2021 22:40
Chemistry, 26.06.2021 22:40
Mathematics, 26.06.2021 22:40
Social Studies, 26.06.2021 22:40
Mathematics, 26.06.2021 22:40
Mathematics, 26.06.2021 22:40
Mathematics, 26.06.2021 22:40
Social Studies, 26.06.2021 22:50