Mathematics, 25.07.2019 08:30 bvghchg8812
Which situation cannot be represented by this equation? 4x+7=31 options are a: taliba has $31 to order phone cases online. she buys 4 phone cases and pays a $7 shipping charge. what is x, the cost of each phone case? b. taliba is ordering phone cases that cost $4 each online. there is also a $7 shipping charge. if she has $31 to spend, how many phone cases, x, can she buy? c. taliba has $31 to order phone cases online. each phone case costs $7, and there is a $4 shipping charge. how many phone cases, x, can taliba buy?
Answers: 2
Mathematics, 21.06.2019 19:40
Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.
Answers: 3
Mathematics, 21.06.2019 20:00
Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?
Answers: 3
Mathematics, 21.06.2019 23:40
30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.
Answers: 1
Mathematics, 22.06.2019 00:30
36x2 + 49y2 = 1,764 the foci are located at: a) (-√13, 0) and (√13,0) b) (0, -√13) and (0,√13) c) (-1, 0) and (1, 0)
Answers: 1
Which situation cannot be represented by this equation? 4x+7=31 options are a: taliba has $31 to...
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