1) my brother is 5 years older than me. my sister is 3 years younger than me. how old was i when my brother was k years old? how old will my sister be when i am n years old? 2) a carpenter can do a job in two hours. his assistant can do the same job in three hours. how long would it take them to do the job together? 3)the sum of lisa's age and myra's age is 19. in 10 years, lisa will be 5 years older than myra. how old is each girl now?

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189