Mathematics for Elementary Teachers with Activities (5th Edition)
5th Edition
ISBN: 9780134392790
Author: Beckmann, Sybilla
Publisher: PEARSON
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Textbook Question
Chapter 5.1, Problem 22P
Explain in your own words why multiplication means the same thing whether we are multiplying fractions or whole numbers.
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Match the surfaces (a) - (f) below with the contour diagrams (1) - (6) below those.
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At least one of the answers above is NOT correct.
The figure shows a hill with two paths, A and B.
(a) What is the elevation change along each path? 400
9400
✓ feet
(b) Which path ascends more rapidly? A v
(c) On which path will you probably have a better view of the surrounding
countryside (assuming that trees do not block your view)? A V
(d) Along which path is there more likely to be a stream?
A V
Note: You can earn 50% partial credit for 2-3 correct answers.
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4)
28. (a) Under what conditions do we say that two random variables X and Y are
independent?
(b) Demonstrate that if X and Y are independent, then it follows that E(XY) =
E(X)E(Y);
(e) Show by a counter example that the converse of (ii) is not necessarily true.
Chapter 5 Solutions
Mathematics for Elementary Teachers with Activities (5th Edition)
Ch. 5.1 - a. Anita had 12 of a bag of fertilizer left. She...Ch. 5.1 - a. Discuss the meaning of 12.14.Include a simple...Ch. 5.1 - Paul used 34 cup of butter in the batch of...Ch. 5.1 - Which of the following are word problems for...Ch. 5.1 - Which of the following are word problems of 34.5=?...Ch. 5.1 - Consider this word problem about baking brownies:...Ch. 5.1 - Explain why it would be easy to interpret the...Ch. 5.1 - Write a word problem for 13.14=? Use the...Ch. 5.1 - Write a word problem for 2.35=? Use the definition...Ch. 5.1 - Write a word problem for 23.5=? Use the definition...
Ch. 5.1 - Write a simple word problem for 23.45=? Use your...Ch. 5.1 - One serving of Gooey Gushers provides 12% of the...Ch. 5.1 - a. Write a word problem for 212.312=? b. Use math...Ch. 5.1 - Manda says that 323.215.=3.2+25.15 Explain why...Ch. 5.1 - a. Write an expression that uses both...Ch. 5.1 - a. Write an expression that uses both...Ch. 5.1 - To understand fraction multiplication thoroughly,...Ch. 5.1 - To understand fraction multiplication thoroughly...Ch. 5.1 - The liquid in a car’s radiator is 75% water and...Ch. 5.1 - * You are holding a yellow flask and a read flask....Ch. 5.1 - Discuss why we must develop an understanding of...Ch. 5.1 - Explain in your own words why multiplication means...Ch. 5.2 - Write and solve your own word problem for...Ch. 5.2 - Write a word problem for 1.32.79. Solve your...Ch. 5.2 - Leah is working on the multiplication problem...Ch. 5.2 - Run used a calculator to determine that...Ch. 5.2 - When we multiply 0.483.9, we first multiply as if...Ch. 5.2 - Suppose you multiply a decimal that has 2 digits...Ch. 5.2 - Suppose you multiply a decimal that has M digits...Ch. 5.2 - Explain how to write 1.89 and 3.57 as improper...Ch. 5.2 - A Shampoo Problem: A bottle contains 25.4 fluid...Ch. 5.2 - Determine the area of the rectangle in Figure 5.12...Ch. 5.2 - Determine the area of a 1.7-until-by-3.1-unit...Ch. 5.3 - Explain the following in your own words. Explain...Ch. 5.3 - For each of the following cases, either explain...Ch. 5.3 - For each of the following cases, either explain...Ch. 5.4 - Write the following numbers as powers of 10:...Ch. 5.4 - a. The winnings of a lottery were $250 million....Ch. 5.4 - Write the following numbers in scientific...Ch. 5.4 - Prob. 4PCh. 5.4 - Tanya says that the one digit of 259 is a 5...Ch. 5.4 - Is 2107 equal to 27? Is 1109 equal to 19? If not,...Ch. 5.4 - Calculate 8123,456,123,456 using a calculator....Ch. 5.4 - Let’s say that you want to write the product...Ch. 5.4 - Light travels at a speed of about 300,000...Ch. 5.4 - According to scientific theories, the solar system...Ch. 5.4 - Suppose that a laboratory has 1 gram of a...Ch. 5.4 - Suppose you multiply a 6-digit number by an...
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