Mathematics, 22.07.2019 10:00, justaguy15
Which expression is equivalent to 12x − 8x + 3 and why? a. 3 + 4x, because (12x − 8x) + 3 = 4x + 3 = 3 + 4x b. 7x, because 12x − 8x + 3 = 4x + 3 = 7x c. 12x − 5, because 12x − (8x − 3) = 12x − 5 d. x, because 12x − 8x + 3 = 12x − 11x = x
Answers: 2
Mathematics, 21.06.2019 16:30, leenzazou98241
The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.
Answers: 1
Mathematics, 21.06.2019 20:50, brea2006
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 21:50, bcox32314
Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x
Answers: 3
Mathematics, 21.06.2019 23:00, crytongillbranion
Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate
Answers: 1
Which expression is equivalent to 12x − 8x + 3 and why? a. 3 + 4x, because (12x − 8x) + 3 = 4x + 3...
Mathematics, 22.09.2019 11:20
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