Mathematics, 26.04.2020 08:24 briceevans32
Selena and Michael have to run 1 mile in P. E. class. Selena runs at a rate of 0.5 mile every 10 minutes. Michael runs 0.125 mile every 2.5 minutes, Which statement about Selena and Michael is true?
A) Selena runs 4 times faster than Michael.
B) Michael runs 4 times faster than Selena.
C) Michael runs 7.5 minutes faster than Selena.
D) Michael and Selena will both finish in 20 minutes.
Answers: 1
Mathematics, 21.06.2019 19:30
Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?
Answers: 1
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 20:20
Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?
Answers: 1
Mathematics, 21.06.2019 21:30
Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.
Answers: 1
Selena and Michael have to run 1 mile in P. E. class. Selena runs at a rate of 0.5 mile every 10 min...
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