Multiply 3 *12 because there is 3 sheets and they are each 12 sq foot then you get 36. divide that by 4 because she cut the sheets four foot sheets and your answer is 9 sheets.
Answer:
roots are at -4/5 and 6
Step-by-step explanation:
(5m + 4)(m - 6) = 0
5m + 4 = 0
5m = -4
m = -4/5
m - 6 = 0
m = 6
Answer:
(0.4958, 0.7422)
Step-by-step explanation:
Let p be the true proportion of water specimens that contain detectable levels of lead. The point estimate for p is . The estimated standard deviation is given by . Because we have a large sample, the 90% confidence interval for p is given by where is the value that satisfies that above this and under the standard normal density there is an area of 0.05. So, the confidence interval is , i.e., (0.4958, 0.7422).
D. People who shop in bookstores are likely to read more books than those who do not.