Cameron is a member of a national gardening club. She asked 200 of her fellow members whether they use compost to fertilize their plants, and 45% responded favorably.
What is the 90% confidence interval for the true proportion of club members who use compost?
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Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

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?

Bring the fraction a/a-4 to a denominator of 16-a^2