If the wheel of the engine of a train is 30/7m in circumference and makes 7 revolutions in 4 secs then the speed of the train is?

Chip worked at the animal shelter for 6 hours each week for several weeks. he worked for a total of 42 hours. which of the following can be used to find the number of weeks chip worked at the animal shelter?

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.