You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 98% confident that you estimate is within 3% of the true population proportion. How large of a sample size is required? Do not round mid-calculation. n =

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

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?

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?