During a landslide, debris can travel down a hillside at speeds up to 200 miles per
hour depending on the slope angle, water content, volume of debris, and type of
earth. Convert 200 miles per hour to kilometers per hour. Use the following unit
conversion 1 mile = 1.60934 km. Round the answer to the nearest tenth."

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

Can some one me with these questions

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.