Mathematics, 05.08.2021 05:00, miner12924owhu4d
A purchasing manager at a university is investigating which brand of LCD projector to purchase to equip "smart" classrooms. of major concern to her is the lifetime of the light bulbs used in the projectors. One company has published the following information regarding the lifetimes of a sample of 50 bulbs used in its LCD projectors: BEN Frequency 20 16 15 12 10 6 5 4 S 700 750 900 950 1000 SOO 850 Bulb lifetime (in hours) Based on the histogram, find the proportion of bulb lifetimes in the sample that are greater than or equal to 900 hours. Write your answer as a decimal, and do not round your answer.
Answers: 2
Mathematics, 21.06.2019 18:00, kellysmith45
The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second
Answers: 3
Mathematics, 21.06.2019 19:30, markel19
The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)
Answers: 3
A purchasing manager at a university is investigating which brand of LCD projector to purchase to eq...
Mathematics, 30.07.2021 03:00