The mean weight of the students in a school is 70 kilograms. a random sample of 25 students was taken and the mean weight was found to be 55 kilograms with a standard deviation of 20 kilograms. what is the test statistics? express your answer into 2 decimal places (example: 25.00)

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

Aculture started with 2,000 bacteria. after 8 hours, it grew to 2,400 bacteria. predict how many bacteria will be present after 19 hours . round your answer to the nearest whole number. p=ae^kt