Write an algebraic expression to model the unknown number situation. the sum of a number and one-third A 1-column table with 5 rows. Column 1 is labeled Addition Words with entries add, increase by, more than, sum, total. Which statements are true? Select all that apply. You can replace "a number" with a variable to represent an unknown value. You can replace "sum" with an addition sign. You can replace "sum" with an multiplication sign. You can replace "one-third" with One-third. The correct algebraic expression is One-third n

Find the missing dimension extra points

Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.

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