1) John has 20 liters salt-water solution. It contains 30% salt. How much salt should he add to make it a 50% solution

2)A man spent 1/6 of his salary. Then he spent 3/7 of the rest. If he has 1600 liras more money in his wallet, then find the amount of his salary.

:))

How do you summarize data in a two-way frequency table?

Which of the following is true about the graph of f(x)=7^x. select all that apply. a= it intercepts the x axis b=it intercepts both axis c=it intercepts neither d=it intercepts the y axis

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).