There are 17 students in a class. on the day the test was given, john was absent. the other 16 students took the test, and their average score was 77. the next day, john took the test, and with his grade included, the new average is 78. what is john's grade on the test

M.xyz =radians. covert this radian measure to its equivalent measure in degrees.

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?