In a sample of 135 ball bearings, the average diameter was found to be 2.99mm with a standard deviation of 0.49. Give a point estimate for the population variance of the diameter of the ball bearings. Round your answer to two decimal places, if necessary.

If 25% of y is 30, what is 60% of y?

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?

Jane’s favorite fruit punch consists of pear, pineapple, and plum juices in the ratio 5: 2: 3. how many cups of pear juice should she use to make 20 cups of punch?