Math at eNotes
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The latest questions and answers, from members following Math at eNotes.Sun, 1 Feb 2015 00:15:48 PSTen-usYou can simplify 3x - 1 - 1 as 3x - 2. In an algebraic expression as...
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You can simplify 3x - 1 - 1 as 3x - 2. In an algebraic expression as this one, one can combine (add or subtract) only the terms that are called "like terms". For example, 2x and -4x are like terms because they both contain variable x with the same power 1. However, 2x and x^2 are not like terms because they contain x with different exponents, so they cannot be combined. Also, 2x and y, or x and 2 are not like terms. In expression 3x -1 - 1, 3x...http://www.enotes.com/homework-help/what-does-3x-1-1-simplify-down-474064Sun, 1 Feb 2015 00:15:48 PSTWhat does 3x-1-1 simplify down to?
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What does 3x-1-1 simplify down to?http://www.enotes.com/homework-help/what-does-3x-1-1-simplify-down-474064#1February 1, 2015, 12:02 am PSTYour original question was how to multiply two binomials. You had done...
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Your original question was how to multiply two binomials. You had done all of the work and wanted to verify the answer: (3+7x)(6+2x) In essence, you will use the distributive property of multiplication over addition: first distribute the 3 across (6+2x) and then distribute 7x across the binomial. Sometimes the method is taught as FOIL (first, outside, inside, last.) I do not like this mnemonic, as it is not useful for other products of...http://www.enotes.com/homework-help/why-problem-flipped-last-step-there-anything-else-474060Sat, 31 Jan 2015 21:30:02 PSTWhy is the problem flipped in the last step and is there anything else I...
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Why is the problem flipped in the last step and is there anything else I need to do or is that it? (3+7x)(6+2x)http://www.enotes.com/homework-help/why-problem-flipped-last-step-there-anything-else-474060#2January 31, 2015, 9:04 pm PSTSubstitution is when you put in a value for x in an equation such as...
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Substitution is when you put in a value for x in an equation such as x=2, x+2=__ 2+2=4. This is used in algebra and is one of the starting points of math used. You should always label your equations and don't forget to input, and after you input you have your answer. Hope that helps :)http://www.enotes.com/homework-help/how-do-you-do-substitution-472138Sat, 31 Jan 2015 20:22:58 PST209 X 7 __ Lets break this problem down. So First you will be...
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209 X 7 __ Lets break this problem down. So First you will be multiplying 9x7 which will give you the answer 63. The 6 will carry over and be added with the out come of 0x7. 6 209 X 7 ___ 3 No multiply 0x7 and get 0 so this leaves you with the carryon 6 209 X 7 ___ 63 Now multiply 7x2 and you'll get 14 which you'll just write down since there isn't an extra number to carry the one. And you have your answer! 209 X 7 ___ 1463http://www.enotes.com/homework-help/whats-209x7-473762Sat, 31 Jan 2015 16:22:00 PST7 times 2 turned into the equation 7x2 would equal 14. However if you...
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7 times 2 turned into the equation 7x2 would equal 14. However if you are ever have trouble with multiplication remember the when you are saying 7 times 2 are are also saying 7 added up twice. So you can add 7 twice see.. 7+7=14 to get the same answer as would any other multiplication problem like 5x3=15 5+5+5=15.http://www.enotes.com/homework-help/whats-7-times-2-473730Sat, 31 Jan 2015 16:13:36 PSTIf you mean doing percent's from fractions I will be glad to show you!...
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If you mean doing percent's from fractions I will be glad to show you! So for example take the two fractions 4/5 or 7/10 All fractions have to ability turn in a decimal! So now put these in a calculator and you should get 4/5= 0.80 7/10= 0.70 Now in order to turn both decimals in percent's we are going to multiply each decimal by 100 and add the percent sign and you have your percent! 0.80x 100 = 80% 0.70x 100 = 70%http://www.enotes.com/homework-help/how-do-do-percents-474038Sat, 31 Jan 2015 15:43:50 PSTTo determine percentage of a number, you must multiply the number by the...
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To determine percentage of a number, you must multiply the number by the decimal form of that percentage. First, find the decimal form of a percentage: Ex 1: 15% = 0.15 Ex 2: 7% = 0.07 Basically, move the decimal two places to the right in order to create a decimal form of percent (or multiply your percent by 0.01) Then multiply the number whose percent you want to find by the decimal form of the desired percentage. Ex 1: 0.15 x 200 = 30...http://www.enotes.com/homework-help/how-do-do-percents-474038#3Fri, 30 Jan 2015 19:09:20 PSTHow do you do percents? If you'd like to add percents by simply adding...
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How do you do percents? If you'd like to add percents by simply adding them together. For example: 25%+50% = 75%. The same is true for subtracting percents. Now, if you'd like to find percent of a value, then that usually applies different rules. Say, for example you'd like to find 25% of 37. You will first convert 25% to a decimal value. Sine 25% means 25 out of 100, 25% = 0.25 Then, you would multiply (0.25) and 37 which would yield...http://www.enotes.com/homework-help/how-do-do-percents-474038#4Fri, 30 Jan 2015 13:10:47 PSTHow do I do percents
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How do I do percentshttp://www.enotes.com/homework-help/how-do-do-percents-474038#5January 30, 2015, 1:02 pm PSTHow do i do this problem: 5 less than the product of 5 and a number y is...
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How do i do this problem: 5 less than the product of 5 and a number y is 22 less than = - product = the result of multiplication 5y-5 = 22 Add 5 to each side: 5y = 27 Divide each side by 5: y = 27/5http://www.enotes.com/homework-help/how-do-do-this-problem-5-less-than-product-5-473865Fri, 30 Jan 2015 03:27:22 PST3d x d Since d is the common term, the 3 will stay the same and you...
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3d x d Since d is the common term, the 3 will stay the same and you will multiply dxd to get d^2. Your final answer will be 3d^2http://www.enotes.com/homework-help/3dxd-474000Fri, 30 Jan 2015 03:24:01 PSTUse PEMDAS to solve 52-2(1) 52-2 = 50
http://www.enotes.com/homework-help/evaluate-following-expression-52-2-4-3-473905
Use PEMDAS to solve 52-2(1) 52-2 = 50http://www.enotes.com/homework-help/evaluate-following-expression-52-2-4-3-473905Fri, 30 Jan 2015 03:22:07 PST23 letters x .46 = 10.58 10.58 + 3.67 for envelopes = 14.25
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23 letters x .46 = 10.58 10.58 + 3.67 for envelopes = 14.25http://www.enotes.com/homework-help/costs-46-mail-each-letter-plus-3-67-box-envelopes-473909Fri, 30 Jan 2015 03:16:14 PST