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# Recent problems solved by 'MathLover1'

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 Triangles/730033: What type of triangle has the side lengths of 2,3,4 ? What type of triangle has the side lengths of 2,3,5 ? What type of triangle has the side lengths of 6,8,9 ? What type of triangle has the side lengths of 6,8,10 ?1 solutions Answer 446397 by MathLover1(6623)   on 2013-03-24 18:20:22 (Show Source): You can put this solution on YOUR website! By the number of sides they have: • - all sides have lengths • - sides have lengths • - sides are type of triangle has the side lengths of ,, is triangle type of triangle has the side lengths of ,,is triangle type of triangle has the side lengths of ,, is triangle What type of triangle has the side lengths of ,, is triangle
 logarithm/729881: Let x = log6 2. Express log6 18 in terms of x.1 solutions Answer 446384 by MathLover1(6623)   on 2013-03-24 17:47:58 (Show Source): You can put this solution on YOUR website!Let . Express in terms of .
 Expressions-with-variables/729957: How to do the System of equations. It says solve the system of equations a) 2x+3y+7z=13 b) x+3y+5z=20 3x+2y-5z=-22 y-4z=-16 5x+7y-3z=-28 3x+2y+9z=361 solutions Answer 446340 by MathLover1(6623)   on 2013-03-24 16:56:26 (Show Source): You can put this solution on YOUR website!a) ........eq. 1 ........eq. 2 ........eq. 3 ________________________ ........eq. 1 ..both multiply: eq1 by 3, eq 2 by 2 ........eq. 2 ........eq. 1 ........eq. 2 .......subtract ______________________ ......eq. 1a ........eq. 2 ...both multiply: eq2 by 5, eq 3 by 3 ........eq. 3 ________________________ ........eq. 2 ........eq. 3 ________________________.......subtract ......eq. 2a take eq. 1a and 2a ......eq. 1a....both multiply: eq1a by 11, eq 2a by 5 ......eq. 2a _____________________________ ......eq. 1a. ......eq. 2a _____________________________...add now go back to ......eq. 1a., plug in and solve for now go back to ........eq. 1., plug in and and solve for ........eq. 1 b) ........eq. 1 .............eq. 2 ........eq. 3 ________________________ ........eq. 1 ..multiply: eq1 by 3, ........eq. 3 ...subtract ______________________ .........................eq. 1a take .........................eq. 1a .............eq. 2 ............multiply by and subtract ______________________________ .........................eq. 1a .............eq. 2 ____________________________subtract go back to .............eq. 2 , plug in and solve for go to ........eq. 1 plug in and and solve for .
 logarithm/729681: Condense. 5 log base 9 of x - 5 log base 9 of z - 10 log base 9 of y1 solutions Answer 446224 by MathLover1(6623)   on 2013-03-23 21:50:35 (Show Source):
 Square-cubic-other-roots/729737: square root of 4x^3-20x^21 solutions Answer 446200 by MathLover1(6623)   on 2013-03-23 19:48:23 (Show Source):
 Exponents-negative-and-fractional/729748: there are 2. got them wrong on a test and cant come up with the teachers answer 1) solve for X: a/bx-c=0 . I get x=cb/a 2) subtract: 3x+1/x2(squared)-9 minus 2x-2/x2(squared -9. my answer x-1/x2(squared -91 solutions Answer 446198 by MathLover1(6623)   on 2013-03-23 19:39:28 (Show Source): You can put this solution on YOUR website! 1) solve for X: ........answer 2) ...if denominator same, just subtract numerators .....factor denominator
 logarithm/729746: How do I write this in logarithimic form? 16^-1/2 = 1/4 Can you show me how to get there?1 solutions Answer 446195 by MathLover1(6623)   on 2013-03-23 19:27:27 (Show Source): You can put this solution on YOUR website! To do these ask yourself three questions. 1. What is the base? Answer: 2. What is the exponent? Answer: 3. What is the result? Answer: Now remember this: log means . So you should write: .....put in the exponent ....then you should put in the base: ...then you should put in the result:
 Polynomials-and-rational-expressions/729745: x^2+9x+20 help factor trinomial1 solutions Answer 446193 by MathLover1(6623)   on 2013-03-23 19:11:49 (Show Source): You can put this solution on YOUR website! ...write as ....group
 logarithm/729721: Log base 3 (3x+18)=log base 3 (x squared+x) 1 solutions Answer 446192 by MathLover1(6623)   on 2013-03-23 19:07:42 (Show Source): You can put this solution on YOUR website! if than ....solve for .....use quadratic formula ...note, , , and solutions: or
 Polygons/729701: what is the exterior angle of a Enneadecagon?1 solutions Answer 446173 by MathLover1(6623)   on 2013-03-23 16:21:57 (Show Source): You can put this solution on YOUR website! To find the exterior angle you divide by the number of sides. enneagon or nonagon, sides, so the exterior angle is
 Travel_Word_Problems/729677: In applying kirchhoff's laws to the circuit shown to the right, the following equations are found.? iA+iB+iC=0 7iA-5iB =2 5iB-3iC=-1 iA=?,iB=?,iC=? type integers or a fractions.1 solutions Answer 446169 by MathLover1(6623)   on 2013-03-23 16:04:40 (Show Source): You can put this solution on YOUR website!......1 .......2 .......3 =?,=?,=? I am going to find ,, start with ......1...solve for ......plug it in 2 .......2 ....both side multiply by ....solve for ........plug in 3 .......3 .......solve for .......both sides multiply by .........now find C and now find since you need ,,, your solutions are: and check: ......1 ......1
 Travel_Word_Problems/729678: Square root of 5R+1=5? R=? Additional Details Type as a integer or decimal rounded to the nearest thousandth 1 solutions Answer 446165 by MathLover1(6623)   on 2013-03-23 14:40:16 (Show Source): You can put this solution on YOUR website! .....raise both sides to the power of two
 Exponential-and-logarithmic-functions/729673: Simplify. Your answer should not include negative exponents. (3x^-1y^5/x^4)^21 solutions Answer 446164 by MathLover1(6623)   on 2013-03-23 14:36:09 (Show Source): You can put this solution on YOUR website!...write as
 Systems-of-equations/729662: 10 + 10 x 10% = ?1 solutions Answer 446154 by MathLover1(6623)   on 2013-03-23 13:38:34 (Show Source): You can put this solution on YOUR website! + % = ...write % as fraction
 Equations/729651: can anybody help me to solve this equation for b? c(a^2-b^2)/(a^2+b^2)^2=0 I know the results already! I just want to understand how to get them. 1 solutions Answer 446144 by MathLover1(6623)   on 2013-03-23 12:53:48 (Show Source): You can put this solution on YOUR website! ....this is true if if , than or if ...=>......=>...
 Travel_Word_Problems/729611: (r^-1 8^1/3)^6 /r^10 8^3/21 solutions Answer 446143 by MathLover1(6623)   on 2013-03-23 12:47:02 (Show Source):
 logarithm/729632: Find the value of the expression. Let logb A = 5 and logb B = -2. Find logb AB.1 solutions Answer 446107 by MathLover1(6623)   on 2013-03-23 11:41:21 (Show Source):
 Quadratic-relations-and-conic-sections/729476: determine the center and asymptotes of this hyperbola equation y=x+1/2x-4 1 solutions Answer 446030 by MathLover1(6623)   on 2013-03-23 00:23:56 (Show Source): You can put this solution on YOUR website! Asymptotes of a hyperbola are the lines that pass through center of the hyperbola and touch the hyperbola. ....since denominator cannot be zero we will find that value of that makes it equal to zero ...=>......=>......this is coordinate of the center and asymptote now find value for center ....=>.. so, coordinate is
 Parallelograms/729306: Find measurement angle PRS in square PQRS.1 solutions Answer 446028 by MathLover1(6623)   on 2013-03-22 23:56:07 (Show Source): You can put this solution on YOUR website! measurement angle PRS in square PQRS: you already know that square has four right angles; so, angle PRS in square PQRS is °
 Circles/729413: What is the equation of the circle with center at (-3, 0) and diameter 20?1 solutions Answer 446027 by MathLover1(6623)   on 2013-03-22 23:50:56 (Show Source): You can put this solution on YOUR website!formula for circle is: where and are coordinates of the center, and is the radius you are given: center at (, ) and diameter (, )=(, ); so, and and we know that ..=>.. now, when you have , , and , plug it in formula
 Square-cubic-other-roots/729540: simplify square root of 4a^3-20x^21 solutions Answer 446022 by MathLover1(6623)   on 2013-03-22 22:18:31 (Show Source):
 Inequalities/729519: Simone has \$40 to buy baseballs for her team's practice. Each baseball costs \$3. Which inequality represents this situation A. 3b < 40 B. 3b > 40 C. 3b < 39 D. 3b < 39 1 solutions Answer 445939 by MathLover1(6623)   on 2013-03-22 19:23:51 (Show Source): You can put this solution on YOUR website!if Simone has \$ to buy baseballs for her team's practice, she can spend \$ or less if each baseball costs \$ she can buy baseballs and that should be \$ or less find how many baseballs you can buy: ...you can buy baseballs so, your answer is choice C. I am not quite sure is choice D. 3b < 39 is correct or you made mistake because is same as C.
 logarithm/729513: write 3log6-log4 as a log of a single number1 solutions Answer 445924 by MathLover1(6623)   on 2013-03-22 18:56:48 (Show Source): You can put this solution on YOUR website! using base we have
 Quadratic_Equations/729512: Please help me understand this: (x+9)^2=64 I tried this: (x+9)^2=64 x^2+81=64 I'm not sure what to do from here. Do you subtract 81 from both sides or subtract 64? If you subtract 81 then it will be x^2=-17; how do I solve this? I cannot use the quadratic function because the number you have to square root it by is a negative number and we haven't learned that yet so I don't think that is right. 1 solutions Answer 445916 by MathLover1(6623)   on 2013-03-22 18:52:30 (Show Source): You can put this solution on YOUR website! you tried this: ..this is incorrect not try it this way: ....since exponents same, bases are same to, so we have .....solve for check:
 Quadratic_Equations/729504: I don't understand how to continue this problem. The problem is: 10x^2+10=8-6x I know that I have to subtract the 8 then the -6x to get 0 I got: 10x^2+6x+2=0 From there, would I have to do the quadratic formula? Because the number you have to square root it by is a negative number and we haven't learned that yet. I tried factoring but I got: 5x^2+3x+1=0 What do I do from here?1 solutions Answer 445913 by MathLover1(6623)   on 2013-03-22 18:40:57 (Show Source): You can put this solution on YOUR website!you did good job, now just use quadratic formula to solve for ..note that coefficient , and ...plug coefficients in ......you have sqrt of negative number and that means there is no real solutions only imaginary and graph will not intersect with x-axis, and solutions are complex numbers ......write as ...since we have solutions: or
 Number-Line/729451: Graph the square root of 11 on a number line.1 solutions Answer 445908 by MathLover1(6623)   on 2013-03-22 18:15:10 (Show Source): You can put this solution on YOUR website! solutions: and
 Angles/729503: if x, 2(x-3), and x+22 are angles of a triangle, then what is x?1 solutions Answer 445907 by MathLover1(6623)   on 2013-03-22 18:03:50 (Show Source): You can put this solution on YOUR website! if , , and are angles of a triangle, then ....solve for
 �t�e�s�t/729484: The sum of the squares of the solution x^2+2kx-5=0 is 26. Find the value of k. Can you please help me out? Thanks so much in advance:)1 solutions Answer 445896 by MathLover1(6623)   on 2013-03-22 16:23:23 (Show Source): You can put this solution on YOUR website!given: The sum of the squares of the solution is . Find: the value of first find the solution using quadratic formula .....note that coefficient , and ...plug in coefficients solutions involving : or since given the sum of the squares of the solution is , we have or check: ...plug in value for if ........find solutions solutions: and if we do second solution above we will get and so, solutions of the are: and or and now check if the sum of the squares of the solution is : ......true or ......true
 Polynomials-and-rational-expressions/729482: Show steps in factoring the following expression: 21y^+72y-481 solutions Answer 445887 by MathLover1(6623)   on 2013-03-22 15:46:39 (Show Source): You can put this solution on YOUR website! .....first factor out .......write as ....group
 Travel_Word_Problems/729466: A car travels at 60km/h and takes 5hours for a journey. How long would the car take if it travelled at 90km/h1 solutions Answer 445867 by MathLover1(6623)   on 2013-03-22 14:25:41 (Show Source): You can put this solution on YOUR website! assuming that distance is same, first find the distance if car travels for if car travels same distance for hours we have
 Numbers_Word_Problems/729461: The sum of three consecutive even integers is 408. What is the largest of the three integers?1 solutions Answer 445864 by MathLover1(6623)   on 2013-03-22 13:38:08 (Show Source): You can put this solution on YOUR website! If we start with an even number and each number in the sequence is more than the previous number then we will get . Let be first even number, than is second and third consecutive number. Their sum is: ...solve for .....first even number .....second even number .....third even number so,the largest of the three integers is