There are 6 gray keys for every 11 black keys. also, the number of black keys is 2 less than twice the number of gray keys. use your answer to part (b) to determine how many gray keys and how many black keys there are.

Which of the following statement about pascal's triangle are true?

What is not true about kl and mn? what is mn? (show your work)

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?