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Recent problems solved by 'MathLover1'

MathLover1 answered: 6814 problems
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Coordinate-system/738551: Can you please help me find the slope of a line perpendicular to each given line. y=-5/3x+3 1 solutions Answer 450849 by MathLover1(6816)   on 2013-04-16 22:16:00 (Show Source): You can put this solution on YOUR website! given line: ...compared to form , you see that slope the slope of a line perpendicular to given line will have a slope so, a slope is => =>

Coordinate-system/738549: please help me find the slope of a line parallel to each given line. y=-2x+1 1 solutions Answer 450848 by MathLover1(6816)   on 2013-04-16 22:09:01 (Show Source): You can put this solution on YOUR website! you are given a line , and it is already in form where and so, the slope of given line is by definition, a line parallel to given line has same slope; so,

Travel_Word_Problems/738540: If the following times are added together, which of the following will the total be? 2 hours 25 minutes 45 minutes 3 hours 27 seconds 1 hour 5 minutes 40 seconds 1 solutions Answer 450844 by MathLover1(6816)   on 2013-04-16 22:00:15 (Show Source): You can put this solution on YOUR website! hours-- minutes------------ seconds hours-- minutes ------------ seconds hours--- minutes------------ seconds hours-- minutes------------ seconds..........add _______________________________________________________________ hours minutes seconds hours minutes seconds .......minutes= hour and minutes hours minutes seconds.......seconds= minute and seconds hours minutes seconds hours minutes seconds........is the total

logarithm/738480: Solve the logarithmic equation. log x + log(x + 48) = 2 1 solutions Answer 450829 by MathLover1(6816)   on 2013-04-16 20:03:47 (Show Source): You can put this solution on YOUR website! ....in base you will have ...use quadratic formula solutions: we need only positive solution

Linear-systems/738474: How do i solve a linear equation? I understand it involves a variable and number line. 1 solutions Answer 450827 by MathLover1(6816)   on 2013-04-16 19:49:22 (Show Source): You can put this solution on YOUR website! In general, to solve an equation for a given variable, you need to the variable; means , where some number is the answer they're looking for an example: Solve you need to get the all by itself on one side of the "equals" sign, and some number on the other side so, add to both sides to eliminate left of the equal sign;remember: no matter what kind of equation you're dealing with -- linear or otherwise -- whatever you do to the one side, you must do the exact same thing to the other side

Parallelograms/738475: if QRST is a rectangle find X if angle Q is equal to 10x-80 1 solutions Answer 450825 by MathLover1(6816)   on 2013-04-16 19:38:21 (Show Source): You can put this solution on YOUR website! if QRST is a rectangle, then each angle is ° so, angle ° if angle is equal to , then .....solve for

Square-cubic-other-roots/738388: sqrt(2x+3)-sqrt(x+1)=1 1 solutions Answer 450797 by MathLover1(6816)   on 2013-04-16 16:49:30 (Show Source): You can put this solution on YOUR website! ....raise both side to power of solutions if , the if , the

Quadratic-relations-and-conic-sections/738317: Simplify the hyperbola 36x^2-4y^2+216x-40y+80 1 solutions Answer 450767 by MathLover1(6816)   on 2013-04-16 14:30:31 (Show Source): You can put this solution on YOUR website! first complete the square : ...group like terms ...factor .....complete the square

Equations/738278: Help please! 14 over x = 5 -1 over x 1 solutions Answer 450755 by MathLover1(6816)   on 2013-04-16 11:31:10 (Show Source): You can put this solution on YOUR website!

Polynomials-and-rational-expressions/738263: Please help! Need step by step instructions on solving (5p^2 - 3) + (2p^2 - 3p^3) Thank you! 1 solutions Answer 450744 by MathLover1(6816)   on 2013-04-16 10:52:21 (Show Source): You can put this solution on YOUR website! ....since you have positive sign in front of both parentheses, just eliminate them ..group like terms

expressions/738255: Multiply. (x - 5)(x2 + 5x + 25) (the 2 after the x is above-I am not sure how to write these out). 1 solutions Answer 450740 by MathLover1(6816)   on 2013-04-16 09:59:03 (Show Source): You can put this solution on YOUR website! x2...you write as x^2 and put it in curly parentheses, three on left side and three on right side and you will get it like this ..now multiply each term from firs parentheses with each term from second parentheses

Expressions-with-variables/738239: 6 divided by 2(1+2)= 1 solutions Answer 450736 by MathLover1(6816)   on 2013-04-16 08:24:08 (Show Source): You can put this solution on YOUR website!

Linear-equations/738236: if y varies directly with x, write the linear function if y=8 and x=4 1 solutions Answer 450735 by MathLover1(6816)   on 2013-04-16 08:21:03 (Show Source): You can put this solution on YOUR website! if varies directly with , then we have a linear function in the form if and , then we have so, your function is:

real-numbers/738231: If a & b are two odd prime numbers, show that a^2-b^2 is composite. 1 solutions Answer 450734 by MathLover1(6816)   on 2013-04-16 08:13:23 (Show Source): You can put this solution on YOUR website! Assume p > q. Since p, q are both odd, p - q ≥ 2. Also, q ≥ 3, p ≥ 5. Since p² - q² = (p + q) (p - q) where p + q, where p + q > p ≥ 5, and p - q ≥ 2, p² - q² is composite.

test/738080: Multiply and write answer in lowest term (x+6)(3x-1)/(x+7)*(x+7)/(3x-1) 1 solutions Answer 450661 by MathLover1(6816)   on 2013-04-15 20:50:20 (Show Source): You can put this solution on YOUR website! = =

Probability-and-statistics/738062: Z=9/13c for c 1 solutions Answer 450651 by MathLover1(6816)   on 2013-04-15 20:18:29 (Show Source): You can put this solution on YOUR website! ....if you have this but if you have

Quadratic_Equations/738026: Solve for x: (2x − 5)(3x + 6) = 0 I have to figure out this problem, but I'm not too sure how to solve these.Could you please show me the steps in order to solve this problem? Thank you! 1 solutions Answer 450646 by MathLover1(6816)   on 2013-04-15 19:21:44 (Show Source): You can put this solution on YOUR website! .......The "Zero Product Property" says: If then or so, if => => and if => => =>

Trigonometry-basics/738012: Find the complement and supplement of an angle with the given measure. 32°20' I got C: 57° 80' but it's wrong. Help? 1 solutions Answer 450639 by MathLover1(6816)   on 2013-04-15 19:02:19 (Show Source): You can put this solution on YOUR website! for angle °' the complement is °-(°')......take on degree from ° and convert in minutes (°')-(°')...now subtract degrees from degrees and minutes from minutes (°-°)('-') °' supplement °-(°')......take on degree from ° and convert in minutes (°')-(°')...now subtract degrees from degrees and minutes from minutes (°-°)('-') °'

Linear_Algebra/737927: graph of the function -2(x - 1)^2 = y + 5? 1 solutions Answer 450604 by MathLover1(6816)   on 2013-04-15 16:18:07 (Show Source): You can put this solution on YOUR website! ...move to the left ......now you have equation of parabola in vertex form where (,) are vertex coordinates, and coefficient If , the parabola opens upwards if , it opens downwards; since your => and parabola opens downwards to graph this function, you need several points to plot and draw a parabola through table: let first point be vertex | | | | | |

Triangles/737928: ac=5 ab=10 what does bc 1 solutions Answer 450600 by MathLover1(6816)   on 2013-04-15 15:57:12 (Show Source): You can put this solution on YOUR website! ....=> ......substitute in

Mixture_Word_Problems/737801: A bank contains $9.45 in dimes and quarters. If there are 48 coins in all, how many of each type are there? Use only one unknown(i.e. just x) 1 solutions Answer 450569 by MathLover1(6816)   on 2013-04-15 11:05:31 (Show Source): You can put this solution on YOUR website! I have $ in quarters and dimes in my pocket. If there are coins in all, there is quarters and dimes ................quarters and dimes: ................dimes

�t�e�s�t/737766: Which expression is equivalent to the following: 6x^4y^2z^6 F:(3x^2yz^3)(3x^2yz^3) G:(2x^4yz^3)(4xy^2z^2) H:(3x^2yz^3)(2x^2yz^3) J:(3x^4yz)(2xyz^5) 1 solutions Answer 450566 by MathLover1(6816)   on 2013-04-15 10:40:19 (Show Source): You can put this solution on YOUR website! check all options and see which one is your answer: F: since , this in not your answer G: since , this in not your answer H: since , this in your answer J: since , this in not your answer so, your answer is

Linear-equations/737756: Express the equation of a line 3x-y+5=0 - find the slope and y intercept 1 solutions Answer 450551 by MathLover1(6816)   on 2013-04-15 09:01:19 (Show Source): You can put this solution on YOUR website! ....first solve for to express the equation of a line in- slope-intercept form where is a slope and y-intercept or .......slope-intercept form; so, the slope is and y-intercept is

Quadratic_Equations/737763: What is the Y coordinate of the vertex for the quadratic: y = x^2 -8x -9 Please show your work Thank you 1 solutions Answer 450549 by MathLover1(6816)   on 2013-04-15 08:55:03 (Show Source): You can put this solution on YOUR website! ..first write it in vertex form where and are and coordinates of vertex ...complete the square so, and coordinate of vertex is see it on a graph:

Quadratic_Equations/737755: Please find the solution(s): 2x^2 -32 = 0 And show work please Thank you 1 solutions Answer 450541 by MathLover1(6816)   on 2013-04-15 08:19:18 (Show Source): You can put this solution on YOUR website! or

real-numbers/737749: Evaluate ((100001^2)-(99999^2))/100000. 1 solutions Answer 450539 by MathLover1(6816)   on 2013-04-15 08:17:07 (Show Source): You can put this solution on YOUR website!

Complex_Numbers/737751: What is the jth root of j? Give the exact value. 1 solutions Answer 450538 by MathLover1(6816)   on 2013-04-15 08:13:21 (Show Source): You can put this solution on YOUR website!

Expressions-with-variables/737753: Given that 3a+8=2b,expresss in terms of b= 1 solutions Answer 450535 by MathLover1(6816)   on 2013-04-15 08:02:00 (Show Source): You can put this solution on YOUR website! , expressed in terms of will be:

test/737662: Can you help me find the slope of the line. (-10,-18),(-2,-11) 1 solutions Answer 450488 by MathLover1(6816)   on 2013-04-14 21:45:44 (Show Source): You can put this solution on YOUR website! Solved by pluggable solver: Finding the slope Slope of the line through the points (-10, -18) and (-2, -11) Answer: Slope is

Exponents/737618: -3(5-6)-4(2-3)= 1 solutions Answer 450479 by MathLover1(6816)   on 2013-04-14 21:32:16 (Show Source): You can put this solution on YOUR website!

Geometry_Word_Problems/737616: Give a counterexample to show that (x+y)2 = x2 + y2 is false. 1 solutions Answer 450457 by MathLover1(6816)   on 2013-04-14 19:37:30 (Show Source): You can put this solution on YOUR website! To find a counter example to " is ", you must use and so that . Presumably you know that . That means you must find and so that . ...notice that the squares on both sides cancel What does that leave you with? ...this is true only if only or , or both and so, it proves that