In circle Q with M PQR equals 42 and PQ equals seven units, find the length of arc PR. Round to the nearest hundred

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Which of these angles are supplementary? a. 100o and 90o b. 78o and 102o c. 54o and 146o d. 12o and 78o