A system of linear equations is given by the tables. x y -1 1 0 3 1 5 2 7 x y -2 -7 0 -1 2 5 4 11 The first equation of this system is y = x + 3. The second equation of this system is y = 3x − . The solution of the system is ( , ).

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

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

What is the range of the data in this stem-and-leaf plot? 2 14 19 32.5 stem and leaf plot. vertical line separates each stem from its first leaf. first row. stem 2. leaves 6, 7, 7. second row. stem 3. leaves 0, 2, 3, 3, 4. third row. stem 4. leaves 0, 5. key. 3 vertical line 0 equals 30.