# MATH 106-C01 - Quantitative Reasoning

Jul 21st, 2016
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Q1 : Which is not a valid translation of “30%” of a number? Q2 : If four times a number is added to 8, the result is three times the number added to 5. Find the number. Q3 : If 3 is added to a number and this sum is doubled, the result is 2 more than the number. Find the number. Q4 : In the 2008 Major League Baseball season, the Tampa Bay Rays won 33 fewer than twice as many games as they lost. They played 162 regular season games. How many wins and losses did the team have? Q5 : Convert from standard notation to scientific notation. Q6 : Convert from scientific notation to standard notation. Q7 : Use scientific notation to perform each of the following computations. Leave answers in scientific notation.

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Homework 10MATH 106-C01 - Quantitative ReasoningSolution of problems 16, 18, 20, 24 and 26 from p301-302Solution of problems 8,10, 12,14, 16, 18, 20 and 24 from p337Solution of problem 36 from p338Solution of problems 38, 68, 70, 72 and 76 from p338Solution of problems 78, 80 and 82 from p338Problem 16, 18, 20, 24 and 26: Page 301-302Which is not a valid translation of 30% of a number?Ans : - Option D is not a valid translation of 30% of a number.If four times a number is added to 8, the result is three times the number added to 5.Find the number.Let the number is x. thenFour times a number added to 8 is4 + 8And three times the number added to 5 is3 + 5As second one is the result of first then4 + 8 = 3 + 5..(1)Now subtracting 3x on both sides, we get4 3 + 8 = 3 3 + 5+8=5Now subtracting 8 on both sides, we get+88= 58 = 3Check :To check if x = - 3 is right, we put it in (1), we get4 + 8 = 3 + 54(3) + 8 = 3(3) + 512 + 8 = 9 + 54 = 4As both sides are satisfied, so the number x = - 3 is correct.If 3 is added to a number and this sum is doubled, the result is 2 more than the number.Find the number.Let the number is x.3 is added to a number and this sum is doubled is2( + 3)2 more than the number is+2As second one is the result of first then2( + 3) = + 2

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