There are 450 seats in the lower level of a concert hall with b balcony seats in upper level so far 170 tickets have been sold which is 1/5 of the total number of seat in concert hall how many tickets sold are balcony seats

Find the distance between c and d on the number line c=3 and d=11

Use the zero product property to find the solutions to the equation (x+2)(x+3)=12

The weibull distribution is widely used in statistical problems relating to aging of solid insulating materials subjected to aging and stress. use this distribution as a model for time (in hours) to failure of solid insulating specimens subjected to ac voltage. the values of the parameters depend on the voltage and temperature; suppose α = 2.5 and β = 190. (a) what is the probability that a specimen's lifetime is at most 250? less than 250? more than 300? (round your answers to four decimal places.) at most 250 less than 250 more than 300 (b) what is the probability that a specimen's lifetime is between 100 and 250? (round your answer to four decimal places.) (c) what value is such that exactly 50% of all specimens have lifetimes exceeding that value? (round your answer to three decimal places.) hr