1. Triangle QRS has a perimeter of 55. If RT bisects angle R, what is the length of QT? a. 10
b. 12
c. 15
d. 18

How do you use the elimination method for this question? explain, because i really want to understand!

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).

What is the measure of sty in oo below? 130 310 230 50