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jim_thompson5910 answered: 28465 problems
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Number-Line/350027: if a < b, then -a > -b. Why is this? Explain and suppose, a = 4 and b = 1 and write in a number line 1 solutions Answer 250170 by jim_thompson5910(28476)   on 2010-09-30 00:28:36 (Show Source): You can put this solution on YOUR website! Start with the given inequality. Subtract b from both sides. Simplify Subtract 'a' from both sides. Simplify Flip the inequality (this is possible since is the same as and vice versa) If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider making a donation at my tutoring website. Thank you. Jim

Expressions-with-variables/349985: trying to help my son with his 6th grade math. writing algebraic expressions can you let me know if these are correct? 200 less than half of a number 1/2n-200 2nd problem the square of the product of 6 and a number (6xn)squared 1 solutions Answer 250142 by jim_thompson5910(28476)   on 2010-09-29 22:51:05 (Show Source): You can put this solution on YOUR website! "200 less than half of a number" translates to or you can write it as "the square of the product of 6 and a number " translates to . Leave the 'x' out because "6n" means "six times 'n'"

Proportions/349984: Solve this proportion: 6/2x = 5/x+8 1 solutions Answer 250141 by jim_thompson5910(28476)   on 2010-09-29 22:49:14 (Show Source): You can put this solution on YOUR website! Start with the given equation. Cross multiply. Distribute and multiply. Subtract from both sides. Subtract from both sides. Combine like terms on the left side. Divide both sides by to isolate . Reduce. ---------------------------------------------------------------------- Answer: So the solution is If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Rational-functions/349980: 1 solutions Answer 250137 by jim_thompson5910(28476)   on 2010-09-29 22:25:13 (Show Source): You can put this solution on YOUR website! Start with the given expression. Reduce Multiply the first fraction by to get that denominator equal to the LCD Subtract the fractions. So If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Expressions-with-variables/349978: a cd cost $ 3.50 more than a tape write an expresion for the total cost of i cd and 1 tape 1 solutions Answer 250135 by jim_thompson5910(28476)   on 2010-09-29 22:17:07 (Show Source): You can put this solution on YOUR website! Let t = cost of one tape. Since "a cd cost $ 3.50 more than a tape", this means that a cd costs dollars. Add up these two costs to get So the total cost of a cd and a tape is dollars. If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Equations/349977: 11-4d=71 1 solutions Answer 250134 by jim_thompson5910(28476)   on 2010-09-29 22:15:29 (Show Source): You can put this solution on YOUR website! Start with the given equation. Subtract from both sides. Combine like terms on the right side. Divide both sides by to isolate . Reduce. ---------------------------------------------------------------------- Answer: So the solution is If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Angles/349901: I am trying to help a friend out. She needs help with an angle of this: problem is...(x-20) and (x+20). The lesson she is on (She thinks it is a Saxton math book) is: Proving Lines Paralell. Please hurry to help. I am working on the same one and we BOTH stuck. 1 solutions Answer 250133 by jim_thompson5910(28476)   on 2010-09-29 22:14:52 (Show Source): You can put this solution on YOUR website! Is there a picture involved with the two angles?

Probability-and-statistics/349808: Hello Disease 1 and Disease 2 are prevalent among people in a certain population. It is assumed that 10% of the population will contract disease 1 sometime during their lifetime, 15% will contact disease 2 eventually,and 3% will contract both diseases. a)Find the probability that a randomly chosen person from this population will contract at least one disease. b)find the conditional probability that a randomly chosen person from this population will contact both diseases, given that he or she has contracted at least disease. Thank You 1 solutions Answer 250027 by jim_thompson5910(28476)   on 2010-09-29 17:48:57 (Show Source): You can put this solution on YOUR website! a) Hint: P(Contract at least one disease) = P(Contract Disease 1) + P(Contract Disease 2) - P(Contract both diseases) b) Hint: P(Contract both given having contracted at least one) = P(Contracting both) divided by P(Contract at least one disease)

Equations/349818: 5x+12-2x=7-(4x+2) 1 solutions Answer 250025 by jim_thompson5910(28476)   on 2010-09-29 17:44:58 (Show Source): You can put this solution on YOUR website! Start with the given equation. Distribute. Combine like terms on the left side. Combine like terms on the right side. Subtract from both sides. Add to both sides. Combine like terms on the left side. Combine like terms on the right side. Divide both sides by to isolate . Reduce. ---------------------------------------------------------------------- Answer: So the answer is If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

percentage/349816: If the percent of increase is 16% and the new number is 522, how do we find the original number? 1 solutions Answer 250024 by jim_thompson5910(28476)   on 2010-09-29 17:44:09 (Show Source): You can put this solution on YOUR website! Let x = the original number. If you have a 16% increase, then you're basically adding 16% of that original number to the original number. In other words: 16% increase of some number = Some number + 16% of same number Symbolically, this means that . Because we know that the new number is 522, we know that I'll let you finish. If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Numeric_Fractions/349812: What is the product of 5a\3 + 5\3a? The slashes are to make the problem a fraction okay not a division sign.=) 1 solutions Answer 250023 by jim_thompson5910(28476)   on 2010-09-29 17:41:31 (Show Source): You can put this solution on YOUR website! So If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Equations/349813: find the unit rate : a computers fan rotates 2000 times in 4o seconds 1 solutions Answer 250022 by jim_thompson5910(28476)   on 2010-09-29 17:39:40 (Show Source): You can put this solution on YOUR website! The computer fan rotates times in one second

Equations/349806: x over 2+x over 4 = 4 1 solutions Answer 250014 by jim_thompson5910(28476)   on 2010-09-29 17:25:00 (Show Source): You can put this solution on YOUR website! Start with the given equation. Multiply both sides by the LCD to clear any fractions. Distribute and multiply. Combine like terms on the left side. Divide both sides by to isolate . ---------------------------------------------------------------------- Answer: So the answer is which approximates to . If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Travel_Word_Problems/349802: How long will it take to drive 330 miles if I go 55 mph and start at 11pm? 1 solutions Answer 250011 by jim_thompson5910(28476)   on 2010-09-29 17:23:34 (Show Source): You can put this solution on YOUR website! Using , we get . Solve for 't' to get . So it takes 6 hours which means that you'll arrive at 11 pm + 6 hours = 5 am If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Inequalities/349800: The question is 6 the solution. the problem is y-8>2y-3 and then I am given these inequalites to work with 6,-19,-15,-2 This is new to me so I don't even know where to start. 1 solutions Answer 250008 by jim_thompson5910(28476)   on 2010-09-29 17:20:46 (Show Source): You can put this solution on YOUR website! First, let's solve the given inequality Start with the given inequality. Add to both sides. Subtract from both sides. Combine like terms on the left side. Combine like terms on the right side. Divide both sides by to isolate . note: Remember, the inequality sign flips when we divide both sides by a negative number. Reduce. ---------------------------------------------------------------------- Answer: So the answer is So ANY number that is less than -5 is a solution to the original inequality. So for example, 6 is NOT a solution as it is NOT less than -5. However, -19 and -12 are both solutions since they are both less than -5. Alternatively, you can plug in each possible solution into the given inequality and evaluate each side. If you get a true statement, then that given possible solution is actually a solution. If you get a false statement, then it's not a solution. If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Travel_Word_Problems/349792: . Choose the best answer to the following question. If X is the set of positive multiples of 2, and Y is the set of positive multiples of 3, then the intersection of X and Y is: 1 solutions Answer 250005 by jim_thompson5910(28476)   on 2010-09-29 17:05:50 (Show Source): You can put this solution on YOUR website! Notation Note: Intersection of X and Y = = Set of positive multiples of 2 AND 3 = Set of positive multiples of 6 (since 2*3 = 6)

Triangles/349752: In the figure in the link below angle CDB is a straight angle. If the measure of angle ADC= 2x-24 , measure of ADE is x+74, and measure of ADB is 9x-148, what is the measure of CDE? please help i dont understand how to solve it http://s231.photobucket.com/albums/ee131/babydolla101/?action=view¤t=angle.png 1 solutions Answer 250003 by jim_thompson5910(28476)   on 2010-09-29 17:02:32 (Show Source): You can put this solution on YOUR website! Hint: ADE = ADC+CDE. So this means that CDE = ADE-ADC Also, because CDB is a straight line, we know that CDB = 180. From the picture, ADC+ADB = CDB. So ADC + ADB = 180. Let me know if this helps or not.

Expressions-with-variables/349749: (2Y+5)+Y=-22 1 solutions Answer 249978 by jim_thompson5910(28476)   on 2010-09-29 15:25:08 (Show Source): You can put this solution on YOUR website! Start with the given equation. Combine like terms on the left side. Subtract from both sides. Combine like terms on the right side. Divide both sides by to isolate . Reduce. ---------------------------------------------------------------------- Answer: So the answer is If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Linear-equations/349745: Write the equation in slope-intercept form for the line passing through each pair of points (-1,3) and (2,-5) 1 solutions Answer 249976 by jim_thompson5910(28476)   on 2010-09-29 15:19:32 (Show Source): You can put this solution on YOUR website! First let's find the slope of the line through the points and Start with the slope formula. Plug in , , , and Subtract from to get Subtract from to get So the slope of the line that goes through the points and is Now let's use the point slope formula: Start with the point slope formula Plug in , , and Rewrite as Distribute Multiply Add 3 to both sides. Combine like terms. note: If you need help with fractions, check out this solver. Simplify So the equation that goes through the points and is If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Equations/349739: can you solve these following questions plaese 19-h-h=-13 14+6a-8=18 25=7+3k-12 5n-16-8n=-10 1 solutions Answer 249974 by jim_thompson5910(28476)   on 2010-09-29 15:11:19 (Show Source): You can put this solution on YOUR website! I'll do the first two to get you started. Please only post one problem at a time. # 1 Start with the given equation. Combine like terms on the left side. Subtract from both sides. Combine like terms on the right side. Divide both sides by to isolate . Reduce. --------------------------------- Answer: So the answer is ======================================================== # 2 Start with the given equation. Combine like terms on the left side. Subtract from both sides. Combine like terms on the right side. Divide both sides by to isolate . Reduce. ---------------------------------------- Answer: So the answer is

Sequences-and-series/349738: The expression x squared can be used to find the nth term in a sequence. What is the 5th term in that sequence? A.)31 B.)25 C.)16 D.)7 1 solutions Answer 249971 by jim_thompson5910(28476)   on 2010-09-29 15:05:55 (Show Source): You can put this solution on YOUR website! Assuming that the first term is n=1, the 5th term is n=5. This means that the fifth term is If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Square-cubic-other-roots/349735: What is the square root of 9 over 49? Please hurry and answer =] my test depends on it haha! 1 solutions Answer 249969 by jim_thompson5910(28476)   on 2010-09-29 14:54:48 (Show Source): You can put this solution on YOUR website! Ask yourself this: What number multiplied by itself gives you 9? Also, what number multiplied by itself gives you 49?

Linear-equations/349734: find y-intercept of y=4x-64 1 solutions Answer 249967 by jim_thompson5910(28476)   on 2010-09-29 14:51:22 (Show Source): You can put this solution on YOUR website! Plug in to get . So when , which means that the y-intercept is (0,-64) If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Inequalities/349732: explain why a < b, then -a > -b 1 solutions Answer 249966 by jim_thompson5910(28476)   on 2010-09-29 14:47:51 (Show Source): You can put this solution on YOUR website! Start with the given inequality. Subtract b from both sides. Simplify Subtract 'a' from both sides. Simplify Flip the inequality (this is possible since is the same as and vice versa) If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider making a donation at my tutoring website. Thank you. Jim

expressions/349727: Add or subtract as indicated, Simplify. Show factoring, cancelling, and the steps to finding the lowest common denominator. (Assume that no denominator is 0.) (x+5)(2)/x(2)+2x-15 + 2/4x-12 I really need help very soon, I am stuck and don't even know where to begin. Thank you! :) 1 solutions Answer 249965 by jim_thompson5910(28476)   on 2010-09-29 14:44:55 (Show Source): You can put this solution on YOUR website! Start with the given expression. Break up the first numerator Factor the first denominator. Highlight the common terms. Cancel out the common terms. Simplify Factor the second denominator. Take note that the LCD is . So we need to get every denominator equal to the LCD so we can add the fractions. Multiply the first fraction by to get that fraction to have the denominator equal to the LCD. Distribute. Add the fractions. Combine like terms. Factor out a '2' from the numerator. Factor out a '2' from the denominator. Highlight the common terms. Cancel out the common terms. Simplify. So simplifies to In other words, If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Rectangles/349726: A rectangle is 4 units wide. How many square units does the rectangle cover if it is 6,7,8, or 9 units long? 1 solutions Answer 249961 by jim_thompson5910(28476)   on 2010-09-29 14:26:02 (Show Source): You can put this solution on YOUR website! 6 units long: Area = 4*6 = 24 square units 7 units long: Area = 4*7 = 28 square units I'll let you do the last two. If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Equations/349714: Which of these shows 36/24 in simplest form? A. 3/2 B. 4/3 C. 2/3 D. 6/4 1 solutions Answer 249959 by jim_thompson5910(28476)   on 2010-09-29 14:09:23 (Show Source): You can put this solution on YOUR website! Solved by pluggable solver: Reducing Fractions Calculator In order to reduce , the numerator and denominator must share a common factor. This common number must evenly divide into both of them without any remainder or decimal. In order to completely reduce the fraction, you must divide the numerator and the denominator by the greatest common factor (GCF). The GCF of and is (note: click here if you need help with finding the GCF). So divide both the numerator and denominator by In other words, to reduce the fraction you do this Plug in the numerator, denominator, and the GCF Now divide 36 by 12 to get 3. This is now the new numerator. Now divide 24 by 12 to get 2. This is now the new denominator. So This means that reduces to In other words, So the answer is A) If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Problems-with-consecutive-odd-even-integers/349711: A positive odd number plus a positive odd number equals a...? A. positive odd number B. positive even number C. negative even number D. negative odd number 1 solutions Answer 249956 by jim_thompson5910(28476)   on 2010-09-29 14:01:43 (Show Source): You can put this solution on YOUR website! Any positive odd number is of the form where (and n is an integer). So another positive odd number may look like where (and m is an integer). Also, we can make the condition that Add the two numbers to get Notice how is of the form which is even where 'q' is some integer. Ie So is an even number which means that the sum of two positive odd numbers is ALWAYS a positive even number. Example: 3 and 5 are positive odd numbers and 3+5 = 8 is an even number. If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

Rectangles/349692: 2x+2(x-10) 1 solutions Answer 249939 by jim_thompson5910(28476)   on 2010-09-29 12:59:05 (Show Source): You can put this solution on YOUR website! which means that If you need more help, email me at jim_thompson5910@hotmail.com Also, feel free to check out my tutoring website Jim

test/349601: i asked 2 questions and can not access the answers help please they are supposed to be posted at www.algebra.com/tutors/students/your-answer.mlp?question349588 and #349586 how do I access the solutions 1 solutions Answer 249938 by jim_thompson5910(28476)   on 2010-09-29 12:57:35 (Show Source): You can put this solution on YOUR website! See the following links below: http://www.algebra.com/algebra/homework/Probability-and-statistics/Probability-and-statistics.faq.question.349588.html http://www.algebra.com/algebra/homework/Probability-and-statistics/Probability-and-statistics.faq.question.349586.html

Matrices-and-determiminant/349687: why is there a minus sign in the determinant 1 solutions Answer 249931 by jim_thompson5910(28476)   on 2010-09-29 12:52:44 (Show Source): You can put this solution on YOUR website! We would need to see the problem to have any idea of what you're referring to.