What is the best approximation of the positive solution to the quadratic function 12x^2-4x-10?

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?