model rocket is launched with an initial upward velocity of 65 m/s. The rocket's height / (in meters) after / seconds is given by the following. h=65t-5t² Find all values of t for which the rocket's height is 25 meters. Round your answer(s) to the nearest hundredth. If there is more than one answer, use the "or" button.) ground t= seconds ローロ X

Solve for x. 73 X.

Find the frequency of a musical note which is 7 half-steps above a note with frequency 260 cps. Round to the nearest whole number. (Use the formula Q-Qo*1.05946" from your notes) The frequency of the note is cps.

Evaluate 1₁3x8 - 7 x³ + 7 x² dx. Round your answer to two decimal places. S²₁3x8 – 7 x³ + 7x² dx = [Number

The death rate per 100,000 for lung cancer is 7 among nonsmokers and 71 among smokers. The prevalence of smoking in the population is 55%.  Calculate the relative risk of dying from lung cancer for a smoker compared to a nonsmoker. Round to the tenth decimal place.

A sample of 150 married women determined that 127 are happy in their marriage. A sample of 150 married men determined that 76% are happy in their marriage.   If you plan to test if the percent of married women who are happy in their marriage is greater than the percent of married men who are happy in their marriage.   What is the p-value? Write to 4 decimal places.