Mathematics for Elementary Teachers with Activities (5th Edition)
5th Edition
ISBN: 9780134392790
Author: Beckmann, Sybilla
Publisher: PEARSON
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Chapter 10.2, Problem 1P
Figure 10.46 9 depicts sun rays traveling toward 3 points on the earth’s surface, labeled A, B, and C. Assume that these sun rays are parallel to the plane of the page. Figure 10.46 Sun rays traveling to the earth
Figure 10.46 Sun rays traveling to the earth
- Use a protractor to determine the angle that the sun’s rays make with horizontal ground at points A, B, and C.
- Suppose there are telephone poles of the same height at locations A, B, and C. Make drawings like the ones in Figure 10.47 on which the vertical lines represent telephone poles, and show on your drawings the different lengths of the shadows of these telephone poles, using the information from part (a).
Figure 10.47 Show the shadows produced by the telephone poles.
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2. A microwave manufacturing firm has determined that their profit function is P(x)=-0.0014x+0.3x²+6x-355 , where is the number of microwaves sold annually. a. Graph the profit function using a calculator. b. Determine a reasonable viewing window for the function. c. Approximate all of the zeros of the function using the CALC menu of your calculator. d. What must be the range of microwaves sold in order for the firm to profit?
Solve by DrWz
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P
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B
dy
Sind Ⓡ de max
⑦Ymax
dx
Solve by Dr
③Yat 0.75m from A
w=6KN/M L=2
W2=9 kN/m
P= 10 KN
Solve By Dr
A clothing manufacturer's profitability
can be modeled by p (x)=-x4 + 40x² - 144, where .x
is the number of items sold in thousands and p (x) is
the company's profit in thousands of dollars.
a. Sketch the function on your calculator and describe the end behavior.
b. Determine the zeros of the function.
c. Between what two values should the company sell
in order to be profitable?
d. Explain why only two of the zeros are considered
in part c.
Chapter 10 Solutions
Mathematics for Elementary Teachers with Activities (5th Edition)
Ch. 10.1 - Tiffany says that the angle at A in Figure 10.29...Ch. 10.1 - Given that the indicated lines in Figure 10.30(a)...Ch. 10.1 - Given that the indicated lines in Figure 10.30 (b)...Ch. 10.1 -
Ch. 10.1 - Ed the robot is standing at point A and will walk...Ch. 10.1 - Draw a map that shows the following route leading...Ch. 10.1 - In your own words, give a clear, logical...Ch. 10.1 - Figure 10.33 shows a rectangle subdivided into...Ch. 10.1 - Given that the lines In Flgure 10.34 marked with...Ch. 10.1 - Determine the sum a+b+c+d+e+f of the angles in the...
Ch. 10.1 - Given that the lines marked with arrows in Flgure...Ch. 10.1 - Determine the sum of the angles at the star...Ch. 10.2 - Figure 10.46 9 depicts sun rays traveling toward 3...Ch. 10.2 - Figure. 10.48 shows a cross-section of Joey's toy...Ch. 10.2 - Figure. 10.49 shows a sketch of a room that has a...Ch. 10.2 - Many people mistakenly believe that the seasons...Ch. 10.2 - Refer to Figure 10.50 , 10.51 , 10.52 , and 10.53...Ch. 10.2 - 'Department store dressing rooms often have large...Ch. 10.2 - 'A concave mirror is a mirror that curves In, like...Ch. 10.2 - A convex mirror Is a minor that curves out, so...Ch. 10.2 - A convex mirror is a mirror that curves out, so...Ch. 10.3 - Smallville Is 7 miles south of Gotham. will is 8...Ch. 10.3 - A new mall is to be built to serve the towns of...Ch. 10.3 - A radio beacon indicates thata certain dolphin is...Ch. 10.3 - A new Giant Superstore is being planned somewhere...Ch. 10.3 - Part 1 of Class Actlvlty 10O on circle designs...Ch. 10.4 - Students sometimes get confused about the...Ch. 10.4 - Draw a Venn diagram or other clear diagram showing...Ch. 10.4 - Draw a Venn diagram or other clear diagram that...Ch. 10.4 - a. Describe how four children could use 4 pieces...Ch. 10.4 - Figure 10.85 shows a method for constructing...Ch. 10.4 - a. Fold and cut paper to make an isosceles...Ch. 10.4 - Draw a line segment AB that is 4 inches long. Now...Ch. 10.4 - a. Use a ruler and compass to help you draw a...Ch. 10.4 - Is there a triangle that has one side of length 4...Ch. 10.4 - Create two different rhombuses, both of which have...Ch. 10.4 - Prob. 11PCh. 10.4 - In a paragraph, discuss how the detinition of...Ch. 10.4 - Give instructions telling Robot Rob how to move...Ch. 10.4 - Give instructions telling Automaton Annie how to...Ch. 10.4 - a. Flgure 10.87 shows 3 pairs of parallel line...Ch. 10.4 - a. Given a parallelogram with angles a, b, c. and...Ch. 10.4 - What is wrong with the diagram for the problem In...Ch. 10.4 - Given a right triangle that has angles a, b, and...Ch. 10.4 - Use the idea of walking and turning around a shape...Ch. 10.4 - a. Determine the angles in a regular pentagon....
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