Write an expression to represent the sum of three times the square of a number and -7. In your expression, what is the value of the constant?

What is the solution to the equation 9^(x+1) =27

For each proportion find the unknown number x 1/5/8=×/15

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).