Mathematics, 31.03.2021 21:10, afolmar2006
Pre-calc, need some help.
Which parametric equations represent y = – |x|? Check all that apply.
x = –t and y = |–t|
x = t2 and y = –|t2|
x = 2t and y = –|2t|
x = t3 and y = |t3|
x = t + 4 and y = –|t + 4|
Answers: 1
Mathematics, 21.06.2019 19:40, evarod
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, 22.06.2019 01:30, jasminespets
What is the surface area of a cube with the volume of 729 ft?
Answers: 1
Pre-calc, need some help.
Which parametric equations represent y = – |x|? Check all that apply.
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