Lab2-5-Solutions

# Lab2-5-Solutions - Lab for Section 2.5 Name Use good...

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Unformatted text preview: Lab for Section 2.5 Name Use good notation and Show appropriate work. Write explanations in complete sentences. . R l. t 1 3 3 11 5 ' 1 g f . (a) 2;; 7K 5 (b) Find the area of a rectangular garden that is 18 “13 feet long and % é 1% 3r \ fecgggwide. x \$— 3.3, 1 OH ﬁt. 24 ii #- ‘i‘ 11”" 2: ii}? 11“ ii = erhw' with H m: H a: as ‘1 ‘” ‘ 2. Christmas shoppers that had purchased a gift in the ﬁrst week of December were surveyed; fifty-seven said they purchased the gift 0 in a store. Twenty-ﬁve said they shopped both online and in stores. 33/ If 90 shoppers were surveyed, how many shopped only online? 378W “Leni- 3. In a survey regarding vacation interests, the following data were collected: 17 said that nature hikes and tourism sites were important. - ) 7 said only educational activities were important. 34? ‘ 18 said tourist sites but not nature hikes were important. 28 said that nature hikes and educational activities were important. a 23 said that nature hikes or tourism sites Were important, but not educational activities. 43 said that nature hikes were important. 13 said that nature hikes, tourism sites, and educational aptivities were important. 6 said that none of the three choices were important. ‘ A 3 a. Find the number of people surveyed. Ci“? jr‘i (emit wL- SArMJ, i ﬁimﬁ I b. How many surveyed thought educatioial activities were important? E q T B. i 8 failurw ctoi'iliirts W EW- H c. How many surveyed thought only tourism sites would be important? s was. too-.5... so; an L. not. «(1. How many surveyed said educational activities or nature hikes e impo_rtant? rig“ gowwedmmmiﬂiaw, f! g x 4. Use the following information to ﬁll out the Venn Diagram. n(BwC)=4,n(C—B)=9,n(AnBnC)m3,n(BUC)=22,n(A—~wC)=7,n(AnB)=7,n(AnC)=5. v- V V V V V 5. U 2 {Amy, Beth, Cece, Dot, Eve, Faith, Gail} Those taking-Art. class are A = {Beth, Dot, Eve}. Those Zitaking Business are B = {Amy, Dot, Gail}. Those taking Chemistry are C I {Eve, Faith, Gail} Find: a,(AuB)u~C b. A—B’ c. (AnC)’ - 33,1“ 90.5%, AM9§ fps} May, @5114}. (Lu; W, W,a.'é4,6s,./f Describe the sets found in a) and in b) in words. 6. Using the sets from problem 5, determine whether the following are true or false. Write true or false. _ a. Amy E B b. {Amy} E B 0. {Eve, Faith, Gail} C C (1. {Eve, Faith, Gail}; C '1 b< TME w W TM. “R; {PM raw (/35 ‘ C s. E, 6. During the half-time of a basketball game, you won the chance to shoot a basketball from three locations to win some money. If you make the layup, you win \$1. If you make the free throw, you win \$10. If you make it from center court, you win \$100. a. What is the greatest amount you can win? b. What is the least amount you can win? ML as“ \$0 s c. List all the possible amounts you can win. Organize your list in a systematic manner. [What set concept is this” go] ﬁljlﬂojﬂloo ) deltMmﬁ‘Hr, HM?- . tlto i gtheJCS. 7. Let A = {x : x is an even natural number between 7 and 13} and B = {x : x is a natural number multiple of 4 less than 16}. Write the solutions to the following problems in roster form using proper set notation. a.A><B b. (EMA) XA 147' “\$10,123 Ezf‘iﬁwzl @ A”: Hm)! [%,%),l%,12) , (10,0,th (10,1235! (my)! ((2,3), H.312)? i“. WM;le will)? ...
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