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The latest questions and answers, from members following Math at eNotes.Thu, 18 Dec 2014 19:52:11 PSTen-usQUESTION:- 2x squared -5=4x Use quadratic formula Write the equation in...
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QUESTION:- 2x squared -5=4x Use quadratic formula Write the equation in standard form Identify a,b,c Solve by using quadratic formula Identify the solution set SOLUTION:- `2x^2-5=4x` `2x^2-4x-5=0` `` Quadratic Equation:- `x={-b+-sqrt(b^2-4ac)}/(2a)` `` Where; a = 2 b = -4 c = -5 Insert the values of a, b and c in the quadratic Equation:- `x={-(-4)+-sqrt((-4)^2-4(2)(-5))}/(2*2)` `x={4+-sqrt(16+40)}/4` `` `x={4+-sqrt(56)}/4` Since there is...http://www.enotes.com/homework-help/2x-squared-5-4x-use-quadratic-formula-write-469533Thu, 18 Dec 2014 19:52:11 PSTFive sixths divided by whole number 5: `5/6-: 5` You can start solving...
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Five sixths divided by whole number 5: `5/6-: 5` You can start solving this by writing the above sum in this way: `5/6 -: 5/1` Now to change the division sign to multiplication, you need to change the second fraction to it's reciprocal i.e. 5/1 to 1/5, `5/6 * 1/5` Cancel out both fives and then multiply both numerators and both denominators by one another, `1/6 or 0.17` Answer. http://www.enotes.com/homework-help/what-five-sixths-divided-by-whole-number-5-460605Thu, 18 Dec 2014 12:58:38 PSTQUESTION:- `x^3-4x^2+x-4=0` SOLUTION:- We can solve this equation by...
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QUESTION:- `x^3-4x^2+x-4=0` SOLUTION:- We can solve this equation by factorization; `x^2(x-4)+1(x-4)=0` Take x^2 and 1 common, so that the bracket values are same, Then separate the two solutions; ` ` `(x^2+1)(x-4)=0` ` <br data-mce-bogus="1"> ` Hence the solutions are; `x^2=-1,x=4` The power of one side become the root on other side; `x=sqrt(-1),x=4` The square root of -1 is equal to (+-i); Hence the solution set is {i,-i,4}...http://www.enotes.com/homework-help/what-solution-x-3-4x-2-x-4-0-470621Thu, 18 Dec 2014 11:47:39 PSTQUESTION:- 2x squared - 7x = 0 `2x^2-7x=0` SOLUTION:- We will be...
http://www.enotes.com/homework-help/solve-equation-2x-squared-7x-0-471475
QUESTION:- 2x squared - 7x = 0 `2x^2-7x=0` SOLUTION:- We will be solving this question by quadratic formula; `x={-b+-sqrt(b^2-4ac)}/(2a)` where, a = 2 b = -7 c = 0 Now inserting these values in the quadratic equation; `x={-(-7)+-sqrt((-7)^2-4(2)(0))}/(2*2)` ` ` `x={7+-sqrt(49-0)}/4` ` ` As we know the square root (sqrt) of 49 is 7, therefore; `x=(7+-7)/4` Now separate the two solutions; x = (7 +7)/4 ...http://www.enotes.com/homework-help/solve-equation-2x-squared-7x-0-471475Thu, 18 Dec 2014 10:55:03 PSTTo multiply fractions you can either cross multiply them and then...
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To multiply fractions you can either cross multiply them and then multiply the remaining numbers in the same way or you can multiply the numerators with one another and the denominators with one another and then cancel out, either way the answer will be the same. For example, multiply 9/5 and 10/27. `9/5 * 10/27` cross multiply 5 with 10 and 9 with 27 `1/1 * 2/3` `(1*2)/(1*3)` `2/3 or 0.67` Now take into account the second method,...http://www.enotes.com/homework-help/how-mutiply-fractions-461670Thu, 18 Dec 2014 10:45:35 PSTDividing fractions is simple all you need to do is change the division...
http://www.enotes.com/homework-help/how-do-you-dive-frations-461503
Dividing fractions is simple all you need to do is change the division sign to multiplication by changing the second fraction to it's reciprocal. Take this as an example, divide 2/4 by 8/10, `2/4-:8/10` You can start by changing the second fraction to 10/8, which will result in division becoming multiplication, `2/4*8/10` Now cross multiply them and check if the numerators are being divided by the denominators, `1/1*2/5` After that multiply...http://www.enotes.com/homework-help/how-do-you-dive-frations-461503Thu, 18 Dec 2014 10:33:22 PSTQUESTION:- SOLUTION:- In order to solve this equation, first we will...
http://www.enotes.com/homework-help/how-do-you-figure-1-4-1-3n-1-2-472614
QUESTION:- SOLUTION:- In order to solve this equation, first we will have to equal the denominators. For equaling denominators we have to find LCD. LCD is 12 in this, therefore; `1/4*3/3 +1/3(n)*4/4 = 1/2*6/6` Isolate the fraction containing n on LHS and the rest on RHS; `4/12n=6/12-3/12` ` <br data-mce-bogus="1"> ` `4/12n=(6-3)/12` ` <br data-mce-bogus="1"> ` `4/12n=3/12` Now 12 will be canceled as it is the denominator of...http://www.enotes.com/homework-help/how-do-you-figure-1-4-1-3n-1-2-472614Thu, 18 Dec 2014 10:28:02 PST4x - y = 5 ------eq(i) 4x + 4y = -4 ------eq(ii) The...
http://www.enotes.com/homework-help/solve-this-linear-system-by-elimination-4x-y-5-4x-462341
4x - y = 5 ------eq(i) 4x + 4y = -4 ------eq(ii) The first step in the method of elimination is to subtract eq(i) from eq(ii), after doing this we will be left with one unknown variable, with the help of which we can find the value of the other. (4x - y) - (4x + 4y) = 5 - ( -4) 4x - y - 4x - 4y = 9 -5y = 9 -5y/5 = 9/-5 y = -9/5 Now insert this value in either one of the equations to find the value of x, 4x - y = 5 4x -...http://www.enotes.com/homework-help/solve-this-linear-system-by-elimination-4x-y-5-4x-462341Thu, 18 Dec 2014 10:15:26 PSTQuestion: 9 times 8 9 x 8 Solution: This is a problem in multiplication...
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Question: 9 times 8 9 x 8 Solution: This is a problem in multiplication is required. Basically it means to multiply 9 number 8 times, like this; 9 x 8 times; 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 (basically 9 is used 8 times) = 72 In simple words, learn the table of 9, then you wont have to perform all this calculation. Its simple because all of them are connected like; 9 x 8 = 72 or 8 x 9 =72 So whether we multiply 9 with 8 or 8 with 9, the answer...http://www.enotes.com/homework-help/9-times-8-469245Thu, 18 Dec 2014 04:48:20 PSTQUESTION:- 5x squared -3x +5 = 7 solve by factoring `5x^2-3x+5=7`...
http://www.enotes.com/homework-help/5x-squared-3x-5-7-solve-by-factoring-466683
QUESTION:- 5x squared -3x +5 = 7 solve by factoring `5x^2-3x+5=7` SOLUTION:- This problem can be solved by two methods:- Factorization Method Quadratic Equation Formula But according to the question we have to solve this problem by factorization; Therefore; `5x^2-3x+5-7=0` `5x^2-3x-2=0` `5x^2-5x+2x-2=0` `5x(x-1)+2(x-1)=0` Separating the two solution sets; 5x + 2 = 0 , ...http://www.enotes.com/homework-help/5x-squared-3x-5-7-solve-by-factoring-466683Thu, 18 Dec 2014 04:38:56 PSTQuestion:- `x^2 - 6x + 5 = 0` SOLUTION:- Factorization Method:- Now...
http://www.enotes.com/homework-help/solve-equation-x-2-6x-5-0-use-quadratic-formula-470545
Question:- `x^2 - 6x + 5 = 0` SOLUTION:- Factorization Method:- Now according to this method first we gotta separate the middle number in such a way that it can be further simplified; `x^2-1x-5x+5=0` `x(x-1) - 5(x-1)=0` ` ` `<br>` Now divide the two solution sets like this:- x - 5 = 0 , x - 1 = 0 x = 5 , x = 1 Hence the Solution set is...http://www.enotes.com/homework-help/solve-equation-x-2-6x-5-0-use-quadratic-formula-470545Thu, 18 Dec 2014 04:00:23 PST`2x^2 - 18x + 36 = 0` `` `` SOLUTION:- WE will use the quadratic formula...
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`2x^2 - 18x + 36 = 0` `` `` SOLUTION:- WE will use the quadratic formula in order to solve this problem, which is; x = {-b +-sqrt(b^2 - 4ac)} /2a Where; a = 2 b = -18 c = 36 Insert values in the formula; x = {-(-18) +-sqrt((-18)^2 -4(2)(36))}/2(2) x = {18 +-sqrt(324 - 288)}/4 x = {18 +-sqrt(36)} /4 Since the square root of 36 is 6 therefore; x = (18 +- 6)/4 Now the two solutions that we can get from this are: x = (18 + 6)/4 ...http://www.enotes.com/homework-help/solve-equation-2x-2-18x-36-0-470640Thu, 18 Dec 2014 03:32:37 PST2x+5=47 2x=47-5 2x=42 X=42/2 X= 21
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2x+5=47 2x=47-5 2x=42 X=42/2 X= 21http://www.enotes.com/homework-help/2x-5-47-b-x-4-2-12-70723Thu, 18 Dec 2014 02:21:21 PST9. To find csc(-200) using a calculator, first find sin(-200). Make sure...
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9. To find csc(-200) using a calculator, first find sin(-200). Make sure your calculator is in "degrees" mode! Then, use the following reciprocal identity: `csc(x) = 1/sin(x)` Since cosecant is the reciprocal of sine, use "reciprocal" (1/x) button on a calculator to find csc(-200): `csc(-200) = 1/sin(-200) = 2.9238` 10. In the right triangle on the picture, side a = 10 and the angle opposite to it, `alpha = 50` , are given. Side b is the side...http://www.enotes.com/homework-help/am-having-trouble-with-these-three-problems-that-473347Wed, 17 Dec 2014 21:57:50 PSTI am having trouble with these three problems that are in the attached...
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I am having trouble with these three problems that are in the attached document, thank you for your help. 9. Using your calculator, find the csc(-200). 10. Solve the following right triangle (see image.) 11. Find a trigonometric equation for the following graph (see image.) http://www.enotes.com/homework-help/am-having-trouble-with-these-three-problems-that-473347#1December 17, 2014, 8:58 pm PST