PLEASE HELP !!
if the temperature on the 11th day was 82°F, which of the measures of central tendency would change the most? Explain the answer
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The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9