Mathematics, 04.10.2019 19:10 pchaneh31
Consider the two vectors a with arrow = 3 î − ĵ and b with arrow = − î − 2 ĵ. (a) calculate a with arrow + b with arrow 2 correct: your answer is correct. î + -3 correct: your answer is correct. ĵ (b) calculate a with arrow − b with arrow 4 correct: your answer is correct. î + 1 correct: your answer is correct. ĵ (c) calculate a with arrow + b with arrow (d) calculate a with arrow − b with arrow (e) calculate the directions of a with arrow + b with arrow and a with arrow − b with arrow. a with arrow + b with arrow incorrect: your answer is incorrect. note that tan (θ + 180°) = tan θ so the inverse tangent should give two answers. your calculator only provides one, so you must draw a careful picture of this vector to check your calculator value.° (counterclockwise from the +x axis) a with arrow − b with arrow ° (counterclockwise from the +x axis)
Answers: 1
Mathematics, 21.06.2019 12:40
An electronics manufacturer wants to know if customers would be interested in a detachable keyboard for their tables and if so, what the most important features would be. the manufacturer partners with an electronics store to include copies of the survey with every purchase at that store for one week. which of the following best explains why this random sample is unlikely to be a good representative sample of tablet owners' preferences for a detachable keyboard? a) one week is likely not enough time to get a large enough sample. b) most people won't bother to send in the survey, which is likely to skew the results c) there is no way to verify whether the responders to the survey actually own a tablet d) the survey is biased because it was conducted through an electronics store, not the general population
Answers: 2
Mathematics, 21.06.2019 15:30
The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.
Answers: 1
Mathematics, 21.06.2019 16:30
Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?
Answers: 3
Mathematics, 21.06.2019 23:50
The graph of a curve that passes the vertical line test is a:
Answers: 3
Consider the two vectors a with arrow = 3 î − ĵ and b with arrow = − î − 2 ĵ. (a) calculate a with a...
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