Prob and Statistics: Greg starts his lawnmower by pulling a cord. The lawnmower successfully starts on the first pull 80% of the time. If the first pull is not successful, Greg tries a second time, which is successful 90% of the time. What is the probability that greg is NOT successful on the first pull, but he starts it on the second pull?

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Jasmine wants to eat at 8: 00pm her meal takes 65mins to cook what time does she need to put the meal in the oven

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.