Algebra ->  Tutoring on algebra.com -> See tutors' answers!      Log On

 Tutoring Home For Students Tools for Tutors Our Tutors Register Recently Solved
 By Tutor
| By Problem Number |

Tutor:

# Recent problems solved by 'funmath'

Jump to solutions: 0..29 , 30..59 , 60..89 , 90..119 , 120..149 , 150..179 , 180..209 , 210..239 , 240..269 , 270..299 , 300..329 , 330..359 , 360..389 , 390..419 , 420..449 , 450..479 , 480..509 , 510..539 , 540..569 , 570..599 , 600..629 , 630..659 , 660..689 , 690..719 , 720..749 , 750..779 , 780..809 , 810..839 , 840..869 , 870..899 , 900..929 , 930..959 , 960..989 , 990..1019 , 1020..1049 , 1050..1079 , 1080..1109 , 1110..1139 , 1140..1169 , 1170..1199 , 1200..1229 , 1230..1259 , 1260..1289 , 1290..1319 , 1320..1349 , 1350..1379 , 1380..1409 , 1410..1439 , 1440..1469 , 1470..1499 , 1500..1529 , 1530..1559 , 1560..1589 , 1590..1619 , 1620..1649 , 1650..1679 , 1680..1709 , 1710..1739 , 1740..1769 , 1770..1799 , 1800..1829 , 1830..1859 , 1860..1889 , 1890..1919 , 1920..1949 , 1950..1979 , 1980..2009 , 2010..2039 , 2040..2069 , 2070..2099 , 2100..2129 , 2130..2159 , 2160..2189 , 2190..2219 , 2220..2249 , 2250..2279 , 2280..2309 , 2310..2339 , 2340..2369 , 2370..2399 , 2400..2429 , 2430..2459 , 2460..2489 , 2490..2519 , 2520..2549 , 2550..2579 , 2580..2609 , 2610..2639 , 2640..2669 , 2670..2699 , 2700..2729 , 2730..2759 , 2760..2789 , 2790..2819 , 2820..2849 , 2850..2879 , 2880..2909 , 2910..2939, >>Next

 Exponential-and-logarithmic-functions/81059: I dont know how to figure these out very well... cubed root of -125?? Evalute expression without calculator.1 solutions Answer 58142 by funmath(2925)   on 2007-05-07 14:30:44 (Show Source): You can put this solution on YOUR website!cubed root of -125?? (-5)(-5)(-5)=-125 therefore the cubed root of -125 is -5. Happy Calculating!!!
 Radicals/81061: Please show me how to solve the answer to square roots. Thanks 7 (outside of)square root of 24 + square root of 90 - 8 square root of 54 1 solutions Answer 58141 by funmath(2925)   on 2007-05-07 14:28:21 (Show Source): You can put this solution on YOUR website!7 (outside of)square root of 24 + square root of 90 - 8 square root of 54 Happy Calculating!!!!
 Polynomials-and-rational-expressions/81033: subtract 3b^2+10b+4 from 10b^2+6b-9 i came up with this answer 7b^2+16b-5 but i have to show my work and i always have a problem when i have to put it on paper help me please?1 solutions Answer 58126 by funmath(2925)   on 2007-05-07 11:08:33 (Show Source): You can put this solution on YOUR website!subtract 3b^2+10b+4 from 10b^2+6b-9 Happy Calculating!!!!
 Polynomials-and-rational-expressions/81039: can i get help solving this please? sqrt3x+6+3=01 solutions Answer 58125 by funmath(2925)   on 2007-05-07 11:05:02 (Show Source): You can put this solution on YOUR website!This has no solution, are you sure you typed it in right? sqrt3x+6+3=0 As soon as you see that the answer to a sqrt is a negative number, you know that there is no solution. If you were to keep trying to solve it, you would get an extraneous solution. Check the solution in the original equation. False, therefore, there is no solution. Happy Calculating!!!
 Radicals/81038: can you help me simplify? 10sqrt7-sqrt281 solutions Answer 58123 by funmath(2925)   on 2007-05-07 11:03:05 (Show Source): You can put this solution on YOUR website!simplify: 10sqrt7-sqrt28 Happy Calculating!!!
 Exponents/81034: Please help me solve this problem I don't understand how to solve this at all. Thank-you very much for your help. 3 1/2 1 solutions Answer 58121 by funmath(2925)   on 2007-05-07 10:56:20 (Show Source): You can put this solution on YOUR website!solve this problem Rules to use: In other words, anything raised to a negative power can be written as 1 over that thing to the positive power. In other words, anything to the zero power is 1. : Happy Calculating!!!! 3 1/2
 Polynomials-and-rational-expressions/81035: can someone help me find the value of the polynomial -x^2-9x-6 I have -5^2-9(5)-6 =-25-45-6 =-761 solutions Answer 58120 by funmath(2925)   on 2007-05-07 10:51:54 (Show Source): You can put this solution on YOUR website!If you were supposed to find the value of the polynomial if x were 5, then you did it right. Happy Calculating!!!
 Linear-systems/80937: This question is from textbook Algebra Structure and Method Write a system of eguationsthat could be used to solve this problem:The math club sold 200 raffle tickets for a total of \$110 at \$0.50 for students and \$0.75 for adults.1 solutions Answer 58071 by funmath(2925)   on 2007-05-06 16:59:15 (Show Source): You can put this solution on YOUR website!Write a system of eguations that could be used to solve this problem:The math club sold 200 raffle tickets for a total of \$110 at \$0.50 for students and \$0.75 for adults. Let student tickets be:x Let adult tickets be:y An equation that represents the total amount of tickets sold is: x+y=200 An equation that represents the amount of money earned is: .50x+.75y=110 You now have a system of equations with two equations an two unknowns: x+y=200 .50x+.75y=110 Happy Calculating!!!
 Finite-and-infinite-sets/80931: Assume the following statements: P= the termperature is 70 degrees Q= It is raining R= There is no wind Find the following statement in symbolic form: If there is no wind, then i is raining or the temperature is 70 degrees. A. R --> (Q v ~P) B. R --> (Q v P) C. (Qv ~P) <--> D. None of the above.1 solutions Answer 58070 by funmath(2925)   on 2007-05-06 16:51:21 (Show Source): You can put this solution on YOUR website!Assume the following statements: P= the termperature is 70 degrees Q= It is raining R= There is no wind Find the following statement in symbolic form: If there is no wind, then i is raining or the temperature is 70 degrees. A. R --> (Q v ~P) . R --> (Q v P) C. (Qv ~P) <--> D. None of the above. Happy Calculating!!!
 Functions/80932: Write the equation of the line that passes through point (–5, –12) with a slope of 21 solutions Answer 58069 by funmath(2925)   on 2007-05-06 16:47:49 (Show Source): You can put this solution on YOUR website!Write the equation of the line that passes through point (–5, –12) with a slope of 2 The formula to attack this problem is called the point slope formula (this is not the only way to do this though.) , m=slope (x1,y1)=given point Happy Calculating!!!
 Functions/80936: Write the equation of the line that passes through point (–5, –12) with a slope of 21 solutions Answer 58068 by funmath(2925)   on 2007-05-06 16:45:51 (Show Source): You can put this solution on YOUR website!Write the equation of the line that passes through point (–5, –12) with a slope of 2 The formula to attack this problem is called the point slope formula (this is not the only way to do this though.) , m=slope (x1,y1)=given point Happy Calculating!!!
 Exponents/80935: Convert the common base- 10 number "13" to a base-2 number A. 111 base 2 B. 1101 base 2 C. 8401 base 2 D. None of the above1 solutions Answer 58067 by funmath(2925)   on 2007-05-06 16:40:38 (Show Source): You can put this solution on YOUR website!Convert the common base- 10 number "13" to a base-2 number A. 111 base 2 . 1101 base 2 C. 8401 base 2 D. None of the above Proof: Happy Calculating!!!
 Finite-and-infinite-sets/80933: Assume the following statements: P= The temperature is 70 degrees Q= It is raining R= There is no wind Find the following statement in word form: Q --> (~R conjunction ~P) A. If it is raining, then there is no wind and the temperature is 70 degrees B. it is raining, if and onl if, there is no wind and the temperature is 70 degrees C. It is raining, if and only if, there is no wind and the temperature is 70 degrees D. None of the above.1 solutions Answer 58065 by funmath(2925)   on 2007-05-06 16:32:48 (Show Source): You can put this solution on YOUR website!Assume the following statements: P= The temperature is 70 degrees Q= It is raining R= There is no wind Find the following statement in word form: Q --> (~R conjunction ~P) If it is raining then there is wind and the temperature is not 70 degrees. This matches none of the possible answers. D : Happy Calculating!!!
 Exponents/80901: Please help me solve this equation: 1 solutions Answer 58049 by funmath(2925)   on 2007-05-06 14:25:07 (Show Source): You can put this solution on YOUR website!Please help me solve this equation: Factor: Two numbers that multiply to give you the last term, +1, but add together to give you the middle term,-2 are -1 and -1. (x-1)(x-1)=0 x-1=0 x-1+1=0+1 x=1 Proof: 0=0 Happy Calculating!!!
 Trigonometry-basics/80913: verify that cos(pi/2 + x)=-sinx1 solutions Answer 58047 by funmath(2925)   on 2007-05-06 14:17:54 (Show Source): You can put this solution on YOUR website!verify that cos(pi/2 + x)=-sinx The sum formula that applies here is: Another important thing to remember is and Happy Calculating!!!!
 Linear_Algebra/80816: This is a question from a class homework assignment. Given a line containing the points (1,3), (2,4), (3,5) determine the slope-intercept form of the equation, give one additional point on this line and graph function. Equation of line in slope-intercept form: show your work: Give one additional point in (x,y) form that would fall on this line: Graph the function:1 solutions Answer 58045 by funmath(2925)   on 2007-05-06 14:07:15 (Show Source): You can put this solution on YOUR website!Given a line containing the points (1,3), (2,4), (3,5) determine the slope-intercept form of the equation, give one additional point on this line and graph function. Equation of line in slope-intercept form: show your work: Use the slope formula to find the slope of the line: (x1,y1)=(1,3) (x2,y2)=(2,4) Use the point slope formula to find the equation of the line: m=1 (x1,y1)=(1,3) Check to make sure that the third point (3,5) is part of the line. Ok, so all three points are colinear and the equation of their line is: Give one additional point in (x,y) form that would fall on this line: Let x be anything, 0 hasn't been used yet. Another point on the line would be: (0,2) Graph the function: Plot the points and connect them and you'll have the following line: Happy Calculating!!!!
 Polynomials-and-rational-expressions/80899: x divided by 64 + 1 divided by x all divided by 1 + 8 divided by x 1 solutions Answer 58044 by funmath(2925)   on 2007-05-06 13:44:33 (Show Source): You can put this solution on YOUR website!x divided by 64 + 1 divided by x all divided by 1 + 8 divided by x Happy Calculating!!!
 logarithm/80133: if F is one-to-one, find equation for its inverse f(x)=(x-8)^21 solutions Answer 57474 by funmath(2925)   on 2007-04-30 15:06:57 (Show Source): You can put this solution on YOUR website!if F is one-to-one, find equation for its inverse f(x)=(x-8)^2 This is not a one to one function. Here's one way you can tell. Graph the function, it's a function if you can draw a vertical line anywhere and only hit the graph once, it's a one to one function if you can also draw a horizontal line anywhere and only hit the graph once. It's a function because you can draw a vertical line anywhere and only hit the graph once, however, if you were to draw a horizontal line you could hit the graph twice, therefore, it's not one to one. You can only find the inverse of the function if they limit the domain of the original function to something like x>8 or x<8. Happy Calculating!!!
 Linear-equations/79885: write the equation in standord form of the horizontal and veritcal lines that pass through the point. 17. (2,4) 18. (-5,4) please help me these problems have been hunating me for days1 solutions Answer 57300 by funmath(2925)   on 2007-04-28 16:44:11 (Show Source): You can put this solution on YOUR website!write the equation in standord form of the horizontal and veritcal lines that pass through the point. 17. (2,4) 18. (-5,4) : The equation of horizontal lines and vertical lines are special cases. For horizontal lines all the points have the same y value, so the equation is y= whatever that number is. For vertical lines the x values never change, so the equation is x= whatever that number is. : 17. (2,4) Horizontal line equation: y=4 Vertical line equation: x=2 : 18. (-5,4) Horizontal line equation: y=4 Vertical line equation: x=-5 : Happy Calculating!!!!
 Linear-equations/79438: Complete the ordered pairs so that each is a solution for the given problem: 3x+4y=12 (_,0),(8/3,_)1 solutions Answer 57015 by funmath(2925)   on 2007-04-24 17:30:52 (Show Source): You can put this solution on YOUR website!Complete the ordered pairs so that each is a solution for the given problem: 3x+4y=12 (_,0),(8/3,_) Ordered pairs are in alphabetical order (x,y) For (_,0) let y=0 and solve for x. 3x+4(0)=12 3x+0=12 3x=12 3x/3=12/3 x=4 So the ordered pair is (4,0) For (8/3,_) let x=8/3 and solve for y 3(8/3)+4y=12 8+4y=12 8-8+4y=12-8 4y=4 4y/4=4/4 y=1 So the ordered pair is (8/3,1) Happy Calculating!!!!
 Exponential-and-logarithmic-functions/79362: This question is from textbook log x=4 solve for x1 solutions Answer 57014 by funmath(2925)   on 2007-04-24 17:25:30 (Show Source): You can put this solution on YOUR website!log x=4 solve for x If there's no base, it is a common log log[10] x=4 The 10 is a subscript x=10^4 x=10,000 Happy Calculating!!!
 Polynomials-and-rational-expressions/79420: Factor x^12-x^4-x^3+11 solutions Answer 57012 by funmath(2925)   on 2007-04-24 17:19:59 (Show Source): You can put this solution on YOUR website!Factor x^12-x^4-x^3+1 factor by grouping The difference of squares a^2-b^2=(a+b)(a-b) The difference of cubes a^3-b^3=(a-b)(a^2+ab+b^2) This can be in a different order or like this: Happy Calculating!!!!
 Angles/79421: This question is from textbook geometry reasoning The measures of two complementary angles are 12q-9 and 8q+14. Find the measures of the angles.1 solutions Answer 57010 by funmath(2925)   on 2007-04-24 17:11:45 (Show Source): You can put this solution on YOUR website!The measures of two complementary angles are 12q-9 and 8q+14. Find the measures of the angles. Complementary angles add together to make 90 degrees. (12q-9)+(8q+14)=90 12q-9+8q+14=90 20q+5=90 20q+5-5=90-5 20q=85 20q/21=85/20 q=17/4 One angle measures to be: 12(17/4)-9 3(17)-9 51-9=42 degrees The other angle measures to be: 8(17/4)+14 2(17)+14 24+14=38 degrees : Sanity Check, do the angles add up to 90 degrees? 42+38=90 yes : Happy Calculating!!!!
 Angles/79423: This question is from textbook geometry reasoning Two angles are supplementary. One angle measures 26degrees more than the other one. Find the measure of the two angles.1 solutions Answer 57008 by funmath(2925)   on 2007-04-24 17:03:18 (Show Source): You can put this solution on YOUR website!Two angles are supplementary. One angle measures 26degrees more than the other one. Find the measure of the two angles. Supplementary angles add up to 180 degrees If the other angle is: x The one angle is x+26 Problem to solve: x+(x+26)=180 x+x+26=180 2x+26=180 2x+26-26=180-26 2x=154 2x/2=154/2 x=77 The other angle is: x=77 degrees The one angle is: x+26=77+26=103 degrees : Sanity Check, do the two angles add to be 180 degrees? 77+103=180 yes. : Happy Calculating!!!
 Exponents-negative-and-fractional/79427: Simplify and write answer without negative exponents (2xy^2z^-3)^-2 ---------------- (3x^-1yz^-2)^-11 solutions Answer 57005 by funmath(2925)   on 2007-04-24 16:52:09 (Show Source): You can put this solution on YOUR website!Simplify and write answer without negative exponents (2xy^2z^-3)^-2 ---------------- (3x^-1yz^-2)^-1 Happy Calculating!!!
 Linear-equations/79429: (2,1) and (-2,-4) find the equation of the line.1 solutions Answer 57002 by funmath(2925)   on 2007-04-24 16:42:46 (Show Source): You can put this solution on YOUR website!(2,1) and (-2,-4) find the equation of the line. In order to find the equation of a line, you need a point and a slope. We have two points, so we can find the slope with the slope formula: , m=slope, (x1,y1) and (x2,y2) are two given points. (x1,y1)=(2,1) and (x2,y2)=(-2,-4) Now you can use the point slope formula to find the equation of a line: , m=slope and (x1,y1) is a given point (x1,y1)=(2,1) and m=5/4 Standard Form Happy Calculating!!!
 Exponential-and-logarithmic-functions/79204: Thanks in advance - this is the last question on my homework and I can't figure it out. Solve for x 10^(2x-1)= e^(4x-3)1 solutions Answer 56846 by funmath(2925)   on 2007-04-22 19:51:20 (Show Source): You can put this solution on YOUR website!Solve for x 10^(2x-1)= e^(4x-3) you can either take the common log, or the natural log of both sides. I chose natural log so that I didn't have to deal with e as a number. ln(e)=1 distribute ln(10) Get x's to one side of = sign. get things without x's to the other side. factor out the x's divide by the coefficient of x Put it in your calculator. Happy Calculating!!!!
 Radicals/79033: Divide. x^2 – 11x + 24/ x - 8 1 solutions Answer 56742 by funmath(2925)   on 2007-04-21 09:57:29 (Show Source): You can put this solution on YOUR website!Divide. x^2 – 11x + 24/ x - 8 Happy Calculating!!!