Math at eNotes
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The latest questions and answers, from members following Math at eNotes.Thu, 24 Jul 2014 00:34:25 PSTen-usA pentagon has five sides to it. The root word penta- is Latin for five...
http://www.enotes.com/homework-help/how-many-sides-does-pentagon-have-90021
A pentagon has five sides to it. The root word penta- is Latin for five so pentagon means five sided figure. Tri- is 3, quad- is 4, penta- is 5, hexa- is 6, hepta- is 7, octo is 8, Nona is 9, deca is 10 and dodeca is 12 and so on.http://www.enotes.com/homework-help/how-many-sides-does-pentagon-have-90021Thu, 24 Jul 2014 00:34:25 PSTMath is very important in our lives because it is everywhere we go. In...
http://www.enotes.com/homework-help/why-math-such-an-important-part-our-lives-389103
Math is very important in our lives because it is everywhere we go. In everyday life simple math is used to do thing such as counting items, adding totals or calculating 20℅ off your new dress with a coupon. In the workplace whether you are a mathematician using calculus or a cashier totaling orders or change math is necessary in all fieldshttp://www.enotes.com/homework-help/why-math-such-an-important-part-our-lives-389103Thu, 24 Jul 2014 00:26:48 PSTIs this a question at all? Whoever has answered and hence has earned...
http://www.enotes.com/homework-help/twice-number-x-470096
Is this a question at all? Whoever has answered and hence has earned money, should have asked for student's clarification before hand. Yes, twice a number 'x' is: 2x Is that what the student wants?http://www.enotes.com/homework-help/twice-number-x-470096Wed, 23 Jul 2014 19:54:40 PSTTranslate the written/verbal expression "twice a number x" into...
http://www.enotes.com/homework-help/twice-number-x-470096
Translate the written/verbal expression "twice a number x" into mathematical/symbolic notation: Twice a quantity usually indicates to take two of the things in question; usually this indicates to multiply by 2. Thus "twice a number x" can be written symbolically as 2x. If this is part of a problem, say twice a number x is 6, then we can rewrite algebraically as 2x=6; dividing both sides by 2 yields x=3. And we can see that, indeed, twice the...http://www.enotes.com/homework-help/twice-number-x-470096#1Wed, 23 Jul 2014 17:29:37 PSTTwice a number x
http://www.enotes.com/homework-help/twice-number-x-470096
Twice a number xhttp://www.enotes.com/homework-help/twice-number-x-470096#2July 23, 2014, 5:16 pm PSTTo use u substitution, you set u = 3x + 4, then take the derivative of...
http://www.enotes.com/homework-help/how-can-find-int-cos-3x-4-by-using-substitution-465175
To use u substitution, you set u = 3x + 4, then take the derivative of u, which is du = 3dx, which means dx = du/3. Plug these back into the original integration. (1/3) `int` cos(u)du Then solve: (1/3)sin(u) + C Plug what u is back in: (1/3)sin(3x + 4) + Chttp://www.enotes.com/homework-help/how-can-find-int-cos-3x-4-by-using-substitution-465175Wed, 23 Jul 2014 14:56:09 PSTUse the equation 2 ( 60 ) + 2w = 170 with " w " as the width . 2 ( 60 )...
http://www.enotes.com/homework-help/rectangle-has-perimeter-170-centimeters-length-60-180361
Use the equation 2 ( 60 ) + 2w = 170 with " w " as the width . 2 ( 60 ) + 2w = 170 now multiply 2 with 60 . By multiplying 2 with 60 , you should get : 120 + 2w = 170 now subtract 120 on both sides By subtracting 120 on both sides , you should have : 2w = 50 now divide both sides by 2 . By dividing both sides by 2 , you should get : w = 25 Since width is 25 and length is 60 , find the area by multiplying 25 with 60 Area = 1500 cm ^2http://www.enotes.com/homework-help/rectangle-has-perimeter-170-centimeters-length-60-180361Wed, 23 Jul 2014 05:29:04 PSTIt doesn't look possible to do #4 with the information given. You just...
http://www.enotes.com/homework-help/1-function-defined-by-which-two-intervals-function-469596
It doesn't look possible to do #4 with the information given. You just state "the parabola" but don't give any points on or equation for the parabola.http://www.enotes.com/homework-help/1-function-defined-by-which-two-intervals-function-469596Tue, 22 Jul 2014 22:41:23 PSTUse the equation 2L + L = 36 with L = the length 2L + L = 36 first...
http://www.enotes.com/homework-help/length-rectangel-twice-its-widtg-pereimeter-36ft-251868
Use the equation 2L + L = 36 with L = the length 2L + L = 36 first combine 2L with L By combing the like terms , you should have : 3L = 36 now divide both sides by 3 . By dividing both sides by 3 , you should get : L = 12 Which is the answer for the length Now divide the length by 2 to get the width . By dividing , you should get that the width equals 6 . So now to find the area , multiply 12 with 6 By multiplying , you should get = 72...http://www.enotes.com/homework-help/length-rectangel-twice-its-widtg-pereimeter-36ft-251868Tue, 22 Jul 2014 15:11:40 PSTThe perimeter of a circle or actually known as the circumference is :...
http://www.enotes.com/homework-help/how-do-you-find-perimeter-circle-semi-circle-87289
The perimeter of a circle or actually known as the circumference is : pi ( d ) The perimeter of a semi circle or actually known as the circumference is : pi ( d ) × 1/2 The area of a circle is : pi ( r ^ 2 ) The area of a semi circle is : pi ( r ^ 2 ) × 1/2http://www.enotes.com/homework-help/how-do-you-find-perimeter-circle-semi-circle-87289Tue, 22 Jul 2014 15:05:02 PSTFirst , " x " = truck So use the equation x + y = 20 subtract " y " on...
http://www.enotes.com/homework-help/word-problem-62661
First , " x " = truck So use the equation x + y = 20 subtract " y " on both sides By subtracting " y " on both sides , you should get x = 20 - y Now use 10 ( 20 - y ) + 12y = 226 distribute the 10 By distributing the 10 , you should get 200 - 10y + 12y = 226 combine the like terms By combining the like terms , you should get 200 + 2y = 226 now subtract both sides by 200 By subtracting , you should get 2y = 26 Divide both sides by 2 . By...http://www.enotes.com/homework-help/word-problem-62661Tue, 22 Jul 2014 14:56:13 PST`log(sqrt(x^3)) = (1/2)` When solving equations we just do the inverse...
http://www.enotes.com/homework-help/problem-1-use-basic-logarithmic-rules-find-exact-470049
`log(sqrt(x^3)) = (1/2)` When solving equations we just do the inverse function of the given stuff to get x by itself. (ie: We would take the root of x^2 to get x by itself) So for this one, the inverse of logs is exponents. A log written like this is log base 10. Therefore, we will raise the whole equation by 10. `sqrt(x^3) = 10^(1/2)` From here, its simple equation stuff. `x^3 = (10^(1/2))^2 = 10` (Rules of exponents)`x = 10^(1/3)`http://www.enotes.com/homework-help/problem-1-use-basic-logarithmic-rules-find-exact-470049Tue, 22 Jul 2014 11:58:04 PSTMath, often associated with the sciences, is highly regarded in our...
http://www.enotes.com/homework-help/editor-read-this-part-why-that-society-someone-469789
Math, often associated with the sciences, is highly regarded in our society and linked with the image of success. Medicine and engineering are very sought out professional fields because they boast high intelligence (and therefore money). Society seems to believe in the idea that not everyone can be heart surgeons because it is hard to become one through medical school and its rigorous courses. Therefore, when someone complains of being bad at...http://www.enotes.com/homework-help/editor-read-this-part-why-that-society-someone-469789Mon, 21 Jul 2014 23:57:22 PSTYour first step is to separate the variables: `y = -x^2 + 3x + 16` To...
http://www.enotes.com/homework-help/determine-highest-point-curve-y-x-2-3x-16-0-470016
Your first step is to separate the variables: `y = -x^2 + 3x + 16` To find the maximum or minimum of a function, you must find where the derivative changes signs (equals zero). To find the derivative, you must use the "power rule." `y' = -2x + 3` `0 = -2x + 3` Solve for "x": `2x = 3` `x = 3/2` Plug in this value to your original equation. `y = -(3/2)^2 + 3(3/2) + 16` `y = 73/4` Your maximum should be at the point (3/2, 73/4).http://www.enotes.com/homework-help/determine-highest-point-curve-y-x-2-3x-16-0-470016Mon, 21 Jul 2014 23:40:57 PSTFirst rule you need to know is that if a base number is not listed you...
http://www.enotes.com/homework-help/problem-1-use-basic-logarithmic-rules-find-exact-470049
First rule you need to know is that if a base number is not listed you can automatically assume your base is 10. So your original can be written as `log_10(sqrt(x^3))=0.5`. Your next rule states that log(x)=y.Basically, you can rewrite your equation to look like this: `10^(0.5)=sqrt(x^3)` . To get rid of the square root you can use the exponent 2 (you have to do this for both sides). `(10^(0.5))^(2)=(sqrt(x^3))^(2)` which will end up...http://www.enotes.com/homework-help/problem-1-use-basic-logarithmic-rules-find-exact-470049#3Mon, 21 Jul 2014 18:46:14 PST