Math at eNotes
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The latest questions and answers, from members following Math at eNotes.Mon, 28 Jul 2014 22:21:43 PSTen-usMath is a vital aspect in our lives because it is used in even the...
http://www.enotes.com/homework-help/why-math-such-an-important-part-our-lives-389103
Math is a vital aspect in our lives because it is used in even the simplest things. its used in measuring, banking, managing money, counting, and time. http://www.enotes.com/homework-help/why-math-such-an-important-part-our-lives-389103Mon, 28 Jul 2014 22:21:43 PSTProblem 3: a) if you want to be certain your pulling red, than don't add...
http://www.enotes.com/homework-help/maths-question-3-4-470092
Problem 3: a) if you want to be certain your pulling red, than don't add any blue b) a 50/50 chance means that they are equal, or that half the bag is red and the other blue, so add 7 blue c) multiply 1/3 by 7/7 to get 7/21. 21 is the total in the bag so subtract the number of red (7) and you know that you need to add 14 blue d) it is impossible to make it impossible to get red, unless you remove red entirely Problem 4: a) 2, 1, 3, 4 b) The...http://www.enotes.com/homework-help/maths-question-3-4-470092Mon, 28 Jul 2014 18:19:19 PSTTwice the number x means 2 times x or 2x, x being a variable that...
http://www.enotes.com/homework-help/twice-number-x-470096
Twice the number x means 2 times x or 2x, x being a variable that changes based on the data. Variables are necessary to show that that particular number is not set in stone, and depends on another variable or constant. For example, lets say you want to know how many watermelon you have sold at the end of the day, this being represented by y because you don't know what this number is yet. To find this total you must know first, how many...http://www.enotes.com/homework-help/twice-number-x-470096Mon, 28 Jul 2014 18:01:29 PSTHeron's formula , is what would be best in this problem. However,...
http://www.enotes.com/homework-help/find-area-triangle-with-component-measurements-470144
Heron's formula , is what would be best in this problem. However, you can continue with the process that you had started, just with a little tweeks. I'll show you how to do this, and the second link is a proof that shows how the following result is equivalent, even if not very desirable. Set up the triangle as shown in the image. Then set up according to Pythagoras: a^2 = h^2 + x^2 b^2 = h^2 +(c-x)^2 Solve for h^2 and substitute: h^2 = a^2...http://www.enotes.com/homework-help/find-area-triangle-with-component-measurements-470144Mon, 28 Jul 2014 17:45:14 PSTWhat does the phrase "Twice a number x" mean? Why do we replace numbers...
http://www.enotes.com/homework-help/twice-number-x-470096
What does the phrase "Twice a number x" mean? Why do we replace numbers with letters/symbols? a number = x and the twive usually means you multiply that number (x) by 2 meaning twice a number x is the same as 2x The reason you replace numbers with letters/symbols is because it tells you that number is unknown (think of an x-file) and therefore by putting that symbol we know we have to solve to get that number.http://www.enotes.com/homework-help/twice-number-x-470096#1Mon, 28 Jul 2014 01:00:15 PST6^2+5x-6=0 a=6 b=5 c=-6 (-b+square root((b^2)-4(a*c)))/(2*a)...
http://www.enotes.com/homework-help/how-do-solve-this-equation-by-useing-guess-check-423414
6^2+5x-6=0 a=6 b=5 c=-6 (-b+square root((b^2)-4(a*c)))/(2*a) (-5+sqroot((5^2)-4(6*-6)))/(2*6)= 0.67 or 2/3 (-5-sqroot((5^2-4(6*-6)))/(2*6)=-1.5 x=2/3 or x=-1.5http://www.enotes.com/homework-help/how-do-solve-this-equation-by-useing-guess-check-423414Sun, 27 Jul 2014 22:12:27 PST3(8x-2)+4x-3(2x+1)-5 24x-6+4x-6x-3-5 24x+4x-6x-6-3-5 22x-14
http://www.enotes.com/homework-help/3-8x-2-4x-3-2x-1-5-423612
3(8x-2)+4x-3(2x+1)-5 24x-6+4x-6x-3-5 24x+4x-6x-6-3-5 22x-14http://www.enotes.com/homework-help/3-8x-2-4x-3-2x-1-5-423612Sun, 27 Jul 2014 21:45:10 PST5-3(x-1)=? x=7 5-3(7-1) 5-3(6) 5-18 -13
http://www.enotes.com/homework-help/5-3-x-1-when-x-7-423051
5-3(x-1)=? x=7 5-3(7-1) 5-3(6) 5-18 -13http://www.enotes.com/homework-help/5-3-x-1-when-x-7-423051Sun, 27 Jul 2014 21:37:16 PSTa^2+b^2=c^2 b=radius 16^2+b^2=20^2 256+b^2=400 256+b^2-256=400-256...
http://www.enotes.com/homework-help/how-do-you-find-volume-cone-terms-pi-when-given-423209
a^2+b^2=c^2 b=radius 16^2+b^2=20^2 256+b^2=400 256+b^2-256=400-256 b^2=144 b=12 v=1/3*pi*r^2*h v=1/3*pi*12^2*16 v=768pihttp://www.enotes.com/homework-help/how-do-you-find-volume-cone-terms-pi-when-given-423209Sun, 27 Jul 2014 21:24:11 PST6(1-2x)-3(x+10)=0 6(1-2x)-3(x+10)=0 6-12x-3x-30=0 -24-15x=0...
http://www.enotes.com/homework-help/6-1-2x-3-x-10-0-how-do-you-solve-423181
6(1-2x)-3(x+10)=0 6(1-2x)-3(x+10)=0 6-12x-3x-30=0 -24-15x=0 -24-15x+24=0+24 -15x=24 -15x/-15=24/-15 x=-1.6http://www.enotes.com/homework-help/6-1-2x-3-x-10-0-how-do-you-solve-423181Sun, 27 Jul 2014 18:50:02 PSTIf you are given a problem with lengths of sides of a triangle, you can...
http://www.enotes.com/homework-help/find-area-triangle-with-component-measurements-470144
If you are given a problem with lengths of sides of a triangle, you can simply use Heron's formula to solve for the area. Heron's formula is as follows: `A = sqrt((s)(s-a)(s-b)(s-c))` where a, b, and c are lengths of a side of the triangle and `s = (a+b+c)/2` which is also known as the semiperimeter. To solve this problem, we must first solve for s. `s = (5+8+10)/2` `s = 23/2 = 11.5` Next, plug this into the original area formula `A =...http://www.enotes.com/homework-help/find-area-triangle-with-component-measurements-470144#2Sun, 27 Jul 2014 15:48:23 PSTWhen given with the lengths of the three sides of a triangle, it is...
http://www.enotes.com/homework-help/find-area-triangle-with-component-measurements-470144
When given with the lengths of the three sides of a triangle, it is better to use Heron's formula in solving its area. The Heron's formula is: `A =sqrt(s(s-a)(s-b)(s-c))` where a, b, and c are the lengths of the sides of the triangle and s is the semi-perimeter of the triangle. To apply that, solve for the semi-perimeter of the triangle. To do so, add the three sides and take half of it. `s=(a+b+c)/2 = (5+8+10)/2=23/2` `s=11.5` Then, plug-in...http://www.enotes.com/homework-help/find-area-triangle-with-component-measurements-470144#3Sun, 27 Jul 2014 07:35:50 PSTRemember that 2 negatives make a positive. Rewrite equ along those...
http://www.enotes.com/homework-help/what-steps-solving-x-this-equation-2x-6-8-212527
Remember that 2 negatives make a positive. Rewrite equ along those terms: 2x+6=8 Since this is addition, the opposite operation is..? (subtraction) -- Subtract both sides by 6: 2x=2 Opposite operation of multiplication? (Division) -- Divide both sides by 2 to isolate x: x=1http://www.enotes.com/homework-help/what-steps-solving-x-this-equation-2x-6-8-212527Sun, 27 Jul 2014 06:56:20 PSTWithout adding the numbers itself, 1.347 + 3.68 can not equal 50.27...
http://www.enotes.com/homework-help/integrated-algebra-help-279705
Without adding the numbers itself, 1.347 + 3.68 can not equal 50.27 because you have to line up the decimals before you add. Furthermore, if you rounded the numbers to the nearest whole number, 1+4=5. The answer should be around 5 not 50.27. http://www.enotes.com/homework-help/integrated-algebra-help-279705Sun, 27 Jul 2014 06:52:27 PST`0^(3)=0x0x0` When you multiply that together, it would still be 0. No...
http://www.enotes.com/homework-help/what-value-0-cube-239863
`0^(3)=0x0x0` When you multiply that together, it would still be 0. No matter what.http://www.enotes.com/homework-help/what-value-0-cube-239863Sun, 27 Jul 2014 06:49:18 PST