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36. There are 40 students in the Travel Club. They discovered that
17 members have visited Mexico, 28 have visited Canada, 10
have been to England. 12 have visited both Mexico and
Canada, 3 have been only to England, and 4 have been only to
Mexico. Some club members have not been to any of the three
foreign countries, and, curiously, an equal number have been
to all three countries.
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(a) How many students have been to all three countries?
(b) How many students have been only to Canada?

Need on this geometry question. explain how you did it.

What is the perimeter of a rectangle if the length is 5 and the width is x?

Use a calculator to verify that σ(x) = 62, σ(x2) = 1034, σ(y) = 644, σ(y2) = 93,438, and σ(x y) = 9,622. compute r. (enter a number. round your answer to three decimal places.) as x increases from 3 to 22 months, does the value of r imply that y should tend to increase or decrease? explain your answer. given our value of r, y should tend to increase as x increases. given our value of r, we can not draw any conclusions for the behavior of y as x increases. given our value of r, y should tend to remain constant as x increases. given our value of r, y should tend to decrease as x increases.