2x+3y+ 2z = 14
-3x + 2 y + z = 27
4x + 5y-4z = 28

Can (3,5 and square root 34) be sides on a right triangle?

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).

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2