Select the correct answer.
Which expression is equivalent to this polynomial expression?
(5x...
Mathematics, 03.09.2021 17:50, sandygarcia65
Select the correct answer.
Which expression is equivalent to this polynomial expression?
(5xy^2 + 3x^2 β 7) + (3x^2y^2 - xy^2 + 3y^2 + 4)
A. 882y2 + 2xy2 β 4y2 + 4
B. 3x2y2 + 4xy2 + 3x2 + 3y2 β 3
C. 3x2y2 + 63y2 + 6x2 + 3
D. 9x2y2 + 4xy2 β 3
Answers: 3
Mathematics, 21.06.2019 20:00, Ap621765
In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d. what is the height of the tide after 93 hours?
Answers: 1
Mathematics, 22.06.2019 02:30, adrianmelchor146
An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 120 lb and 161 lb. the new population of pilots has normally distributed weights with a mean of 125 lb and a standard deviation of 28.1 lb. a)if a pilot is randomly selected, find the probability that his weight is between 120 lb and 161 lb. the probability is approximately? b. if 36 different pilots are randomly selected, find the probability that their mean weight is between 120 lb and 161 lb. the probability is approximately? c. when redesigning the ejection seat, which probability is more relevant? . part (b) because the seat performance for a single pilot is more important. b. part (b) because the seat performance for a sample of pilots is more important. c. part (a) because the seat performance for a sample of pilots is more important. d. part (a) because the seat performance for a single pilot is more important.
Answers: 3
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