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# Recent problems solved by 'Fombitz'

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 Quadratic_Equations/357964: Hi guys, Struggeling with the following partial fractions: 1/(x+1)(x^2-1) 1/x^3+2x Any Help To Show Me Steps Of How To Complete The Equations Would Be Much Help, Thank you1 solutions Answer 255530 by Fombitz(13828)   on 2010-10-18 13:50:33 (Show Source): You can put this solution on YOUR website! Multiply by the denominator, 1. 2. 3. From eq. 1, From eq. 2, Then substituting into eq. 3, Now back substitute and find A and B. . . . Multiply by the denominator, 1. 2. From eq. 2, Then from eq. 1, . . .
 Polynomials-and-rational-expressions/357927: (a + 3)(a - 2) 1 solutions Answer 255527 by Fombitz(13828)   on 2010-10-18 13:41:33 (Show Source): You can put this solution on YOUR website!Use the FOIL Method,
 Angles/357935: The measure of ∠A is 8° more than three times the measure of ∠B. If A and B are supplementary angles, find the measure of ∠A.1 solutions Answer 255518 by Fombitz(13828)   on 2010-10-18 13:21:12 (Show Source): You can put this solution on YOUR website!By definition, . . . Substitute, degrees Then degrees
 Angles/357945: How do i find the measure of a complement angle of 27 degrees?1 solutions Answer 255516 by Fombitz(13828)   on 2010-10-18 13:19:38 (Show Source): You can put this solution on YOUR website!By definition, degrees
 Linear-equations/357944: Find the slope and the y-intercept of each line. y = -4 + 12 another problem is y = 5x and another problem is y = 1/2x + 6 1 solutions Answer 255515 by Fombitz(13828)   on 2010-10-18 13:18:01 (Show Source): You can put this solution on YOUR website!Each line is in slope-intercept form, , where is the slope and is the y-intercept. Example: , the slope is , the y-intercept is.
 Systems-of-equations/357947: Perform the indicated operations: Simplify (-3a^4b^8/6a^3b^12)^41 solutions Answer 255514 by Fombitz(13828)   on 2010-10-18 13:17:02 (Show Source):
 Linear_Equations_And_Systems_Word_Problems/357948: Set up an equation in one variable and solve it. Abner has 4 liters of a 40% solution of alcohol. How much pure alcohol must he add to have an 80% solution?1 solutions Answer 255513 by Fombitz(13828)   on 2010-10-18 13:14:09 (Show Source): You can put this solution on YOUR website!Let A be the amount of 100% alcohol added. Concentration equation: liters.
 Permutations/357967: How many 5 digit license plates can be formed allowing repetition of letters and numbers?1 solutions Answer 255511 by Fombitz(13828)   on 2010-10-18 13:12:31 (Show Source): You can put this solution on YOUR website!If numbers and letters can be used in each place, then 36 possible values for each of the 5 positions. plates
 Polynomials-and-rational-expressions/357963: Multiply. (5-2x^7)^21 solutions Answer 255509 by Fombitz(13828)   on 2010-10-18 13:10:50 (Show Source): You can put this solution on YOUR website!Use the FOIL Method,
 Systems-of-equations/357966: : Perform the indicated operations: Expand the expression: (2a – 3)3 1 solutions Answer 255508 by Fombitz(13828)   on 2010-10-18 13:08:01 (Show Source):
 Sequences-and-series/357898: Hi, having some problems with the following question any chance some one could step by step walk me though it please Q. find a formula for the sum of x^2+x^6+x^10+...+x^2+4n+...+x^42 What will be the sum of the series when x = 1? Also finding this one tricky to: Q. obtain the sum of the infinite geometric progression 2-2/3+2/9-2/27+... Any help would be very helpful Thanks :)1 solutions Answer 255483 by Fombitz(13828)   on 2010-10-18 11:18:39 (Show Source): You can put this solution on YOUR website! Find the number of terms. Since the terms start at 0 and not 1, then there are 11 terms altogether. Eleven terms, each having a value of 1. . . .
 Equations/357897: Divide (30b^3 + 3b^2 + 36b +30) / (6b + 3)1 solutions Answer 255480 by Fombitz(13828)   on 2010-10-18 11:09:05 (Show Source): You can put this solution on YOUR website!Use polynomial long division. . . . ``` 5b^2 + (-2b) + 7 __________________________ 6b + 3 | 30b^3 + 3b^2 + 36b + 30 - (30b^3 + 15b^2) --------------- -12b^2 + 36b - (-12b^2 + (-6b)) -------------- 42b + 30 - (42b + 21) -------- 9 ``` . . .
 Numbers_Word_Problems/357911: find the sum of 2+4+6+.......+120=1 solutions Answer 255477 by Fombitz(13828)   on 2010-10-18 11:03:58 (Show Source): You can put this solution on YOUR website! . . . . . .
 Polynomials-and-rational-expressions/357907: Multiply. (9-2x)(2-8x)1 solutions Answer 255475 by Fombitz(13828)   on 2010-10-18 11:00:17 (Show Source): You can put this solution on YOUR website!Use the FOIL Method,
 test/357909: Solve the following system by the addition method. 8x+3y=8 8x-5y=8 x= y=1 solutions Answer 255474 by Fombitz(13828)   on 2010-10-18 10:58:46 (Show Source): You can put this solution on YOUR website!1. 2. Multiply eq. 1 by -1 and add to eq. 2, Then use either equation to solve for .
 Functions/357821: Write your answers in the form of a+bi, where a and b are real numbers. 2-7i/1-6i + 3-5i/1-6i1 solutions Answer 255472 by Fombitz(13828)   on 2010-10-18 10:57:03 (Show Source):
 test/357903: Solve the following system by the addition method. 1/2x-1/3y= -4 -1/12x+1/10y= 2 x= y=1 solutions Answer 255471 by Fombitz(13828)   on 2010-10-18 10:52:08 (Show Source): You can put this solution on YOUR website!1. 2. Multiply eq. 1 by () and add to eq. 2 to eliminate Then use either equation to solve for .
 Exponents/357905: Simplify by removing factors of 1 m^2-1 /(m+1)^2 the simplified form is ???1 solutions Answer 255470 by Fombitz(13828)   on 2010-10-18 10:48:05 (Show Source):
 Linear_Equations_And_Systems_Word_Problems/357822: Determine whether there is a maximum or minimum value for the given function, and find that value. f(x) = x2 – 5x + 121 solutions Answer 255469 by Fombitz(13828)   on 2010-10-18 10:47:11 (Show Source): You can put this solution on YOUR website!Convert to vertex form, . Since , then the value at the vertex is a minimum. . . .
 Quadratic_Equations/357902: Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard ax^2 + bx + c = 0 Solution 6, only solution. The equation is ????? = 01 solutions Answer 255468 by Fombitz(13828)   on 2010-10-18 10:43:39 (Show Source):
 Exponents/357899: Add, simplify if possible 2r/r^2-16 + r/r-41 solutions Answer 255467 by Fombitz(13828)   on 2010-10-18 10:42:41 (Show Source): You can put this solution on YOUR website!Use the common denominator,
 Finance/357892: Find all the complex solutions of: x^4+3x^2-4=01 solutions Answer 255466 by Fombitz(13828)   on 2010-10-18 10:39:07 (Show Source): You can put this solution on YOUR website! Use a substitution, . . .
 Probability-and-statistics/357893: You are given the following data. Number of Absences Final Grade 0 91 1 89 2 84 3 76 4 67 5 49 - Find the correlation coefficient for the data. - Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.1 solutions Answer 255464 by Fombitz(13828)   on 2010-10-18 10:35:06 (Show Source): You can put this solution on YOUR website! . . . . . .
 Probability-and-statistics/357696: Find the probability of getting at least three defective items in a batch of ten items if the overall percentage of defects is 40%1 solutions Answer 255463 by Fombitz(13828)   on 2010-10-18 10:26:18 (Show Source): You can put this solution on YOUR website!Find the probability for to defective items. . . . P(at least 3)= P(at least 3)= P(at least 3)=
 Exponential-and-logarithmic-functions/357709: F(X)=-5x 1 solutions Answer 255460 by Fombitz(13828)   on 2010-10-18 10:14:44 (Show Source): You can put this solution on YOUR website! . . . What's the question?
 test/357718: How do I solve multi- step equations1 solutions Answer 255459 by Fombitz(13828)   on 2010-10-18 10:14:00 (Show Source): You can put this solution on YOUR website!Do you have an example of what you mean by multi-step equation??
 Graphs/357891: why do f represent the graph of a function?1 solutions Answer 255458 by Fombitz(13828)   on 2010-10-18 10:13:12 (Show Source): You can put this solution on YOUR website! typically represents the function of . When you actually plot the (,) or (,) pairs then the graph of the curve represents the function but is really just a visual representation of the function .
 Trigonometry-basics/357727: what is 2cos^2(10)-1 simplified to?1 solutions Answer 255454 by Fombitz(13828)   on 2010-10-18 10:03:18 (Show Source):
 Equations/357726: is the solution (x=-2 and y=0) dependent or inconsistent 1 solutions Answer 255453 by Fombitz(13828)   on 2010-10-18 10:01:10 (Show Source): You can put this solution on YOUR website!Neither, it's consistent and independent.
 Inequalities/357725: 2x^2/3-7x^1/3=4 Says to solve1 solutions Answer 255452 by Fombitz(13828)   on 2010-10-18 09:59:39 (Show Source): You can put this solution on YOUR website! This is a quadratic equation in disguise. Use a substitution, Two solutions: . . .
 Linear-systems/357715: Find the value of k such that the system of equations is inconsistent. 15x- 3y = 6 -10y+ ky = 9 1 solutions Answer 255451 by Fombitz(13828)   on 2010-10-18 09:56:23 (Show Source): You can put this solution on YOUR website!Inconsistent means that the two lines are parallel. The ratio of x and y coefficients must be identical, . . .