Before Apollo 11 descended to the surface of the moon, it made one orbit at a distance of 3 miles above the surface of the moon. At one point in it's orbit, the onboard guidance system measured the angles of depression to the near and far sides of a huge crater. The angles measured 25° to the near side of the crater, and 18° to the far side of the crater. Find the distance across the crater.

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables

Multiply: 2.7 × (–3) × (–1.2). a. –9.72 b. –10.8 c. 10.8 d. 9.72