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 Probability-and-statistics/360957: a test consists of 100 true or false questions. If the students guesses on each question, what is the mean number of correct answer1 solutions Answer 257531 by Fombitz(13828)   on 2010-10-24 20:34:17 (Show Source): You can put this solution on YOUR website!Each answer has a probability of p=0.5. For a binomial distribution, . . . 50 correct answers.
 Linear-equations/360973: 5x-6y=-4 ; x=y1 solutions Answer 257530 by Fombitz(13828)   on 2010-10-24 20:32:05 (Show Source): You can put this solution on YOUR website!1. 2. Substitute eq. 2 into eq. 1, . .
 Triangles/360969: in triangle ABC, angle A=6x+11, Angle B=3x-1, and Angle C=5x+2. Solve for x and find the measure of each interior angle. Also, find the measure of the exterior angle at B.1 solutions Answer 257529 by Fombitz(13828)   on 2010-10-24 20:30:33 (Show Source): You can put this solution on YOUR website!The sum of the interior angle of a triangle are 180. . . degrees . . degrees . . }degrees . . degrees
 Unit_Conversion_Word_Problems/360935: It takes 2 people 24 minutes to feed 18 cats. Working at the same rate, how many minutes should it take 3 people to feed 18 cats?1 solutions Answer 257528 by Fombitz(13828)   on 2010-10-24 20:24:37 (Show Source): You can put this solution on YOUR website!It take people-minutes to feed 18 cats. minutes
 Polynomials-and-rational-expressions/360954: algebra 2 how to factor 2n^2+10=821 solutions Answer 257527 by Fombitz(13828)   on 2010-10-24 20:23:28 (Show Source):
 Probability-and-statistics/360983: --------------- QUESTION FOLLOWS -------------------------- How many green elements ae required to make this a legitimate probability distrubtion if there are a total of 50 elements in this sample? X red blue orange brown green P(x) 0.10 0.10 0.18 0.221 solutions Answer 257526 by Fombitz(13828)   on 2010-10-24 20:22:08 (Show Source): You can put this solution on YOUR website!To be a legitimate distribution, it needs to sum to 1.0 so find P(G). . . .
 Rational-functions/360941: How do I find the range of the function sqrt x(x-20)?1 solutions Answer 257525 by Fombitz(13828)   on 2010-10-24 20:19:07 (Show Source): You can put this solution on YOUR website!Square root function have values that start at zero (for x=20) and increase to infinity as x increases. Range:[,)
 Probability-and-statistics/360939: A set of data has mean 66 and standard deviation 7 find the z-score of the value 32.1 solutions Answer 257524 by Fombitz(13828)   on 2010-10-24 20:15:48 (Show Source):
 Polynomials-and-rational-expressions/360932: What is the answer to this factor by grouping equation 2xy+3x-8y-121 solutions Answer 257523 by Fombitz(13828)   on 2010-10-24 20:14:53 (Show Source):
 Points-lines-and-rays/360925: z is the midpoint of line xy and xy=27 find xz1 solutions Answer 257521 by Fombitz(13828)   on 2010-10-24 20:12:23 (Show Source): You can put this solution on YOUR website! . . . Substitute,
 Mixture_Word_Problems/360921: If I have a 20% acid solution and a 50% acid solution, how many liters of each do I have to mix to get 600 liters of a 30% solution?1 solutions Answer 257520 by Fombitz(13828)   on 2010-10-24 20:11:07 (Show Source): You can put this solution on YOUR website!Let A be the amount of 20% acid solution, and B the amount of 50% acid solution. 1. . . 2. Multiply eq. 1 by -2 and add to eq. 2, liters Then from eq. 1, liters
 Equations/360924: f(x)=1/3(x+7)^2+71 solutions Answer 257519 by Fombitz(13828)   on 2010-10-24 20:08:46 (Show Source): You can put this solution on YOUR website!What's the question? . . .
 Expressions-with-variables/360980: P = W(R-r)/2R solve for W solve for r1 solutions Answer 257518 by Fombitz(13828)   on 2010-10-24 20:07:51 (Show Source): You can put this solution on YOUR website! . . . .
 Mixture_Word_Problems/360912: how many grams of alcohol must be added to 40 grams of a 15% alcohol solution to obtain a 20% alcohol solution1 solutions Answer 257517 by Fombitz(13828)   on 2010-10-24 20:05:52 (Show Source): You can put this solution on YOUR website!Let A be the number of grams of 100% alcohol. grams
 Quadratic_Equations/360913: How many solutions does y^2=4/5y+1/2 and x^2-2x-11=0 have?1 solutions Answer 257516 by Fombitz(13828)   on 2010-10-24 20:03:48 (Show Source): You can put this solution on YOUR website!Quadratic equations always have two solutions. . . . . . . . . . .
 Quadratic_Equations/360571: Solve this equation by using the quadratic form. 6x^4 + 11x^2 +4 = 01 solutions Answer 257306 by Fombitz(13828)   on 2010-10-24 00:59:23 (Show Source): You can put this solution on YOUR website! . . . . . . .
 Systems-of-equations/360611: Solve each equation 2(4 - 5h)= 3h^21 solutions Answer 257302 by Fombitz(13828)   on 2010-10-24 00:53:30 (Show Source): You can put this solution on YOUR website! Two solutions: . . .
 Quadratic_Equations/360547: Solve the equation x^2-16x+15=0 for ALL SOLUTIONS by COMPLETING THE SQUARE and include AT LEAST THE FIRST TWO MIDDLE STEPS. 1 solutions Answer 257301 by Fombitz(13828)   on 2010-10-24 00:51:06 (Show Source): You can put this solution on YOUR website! and
 Linear-equations/360604: In problem 25-28 write the equation and sketch the graph of each line with the given the slope and y-intercept. 25 Slope 1/2 and Y-intercept 3 26 Slope 2 and Y-intercept 3 27 Slope -2 and Y-intercept 1/2 28 Slope 2/3 and Y-intercept -11 solutions Answer 257300 by Fombitz(13828)   on 2010-10-24 00:48:14 (Show Source): You can put this solution on YOUR website!I'll do one, you can do the rest. Use the slope-intercept form of a line,. Plot the y-intercept, (0,3). . . . . . . Slope equals change in y over change in x. If I move 2 units in the x, then I need to move 1 unit in the y since the slope is . . . Starting from the point (0,3), X: Y: (2,4) is another point on the line. Plot it and then connect the two points with a line, . . . .
 Polynomials-and-rational-expressions/360121: how do i find the zeros of the function y=x^3-4x-11 solutions Answer 257071 by Fombitz(13828)   on 2010-10-22 19:51:11 (Show Source): You can put this solution on YOUR website! . . . I used Newton's method, with starting value of, , and , and ,
 Expressions-with-variables/360126: Write an equation in point-slope form for the line parallel to -18x + 2y = 7 that contains (3, 1)1 solutions Answer 257070 by Fombitz(13828)   on 2010-10-22 19:46:54 (Show Source): You can put this solution on YOUR website!First find the slope of this equation. . . . Parallel lines have identical slopes. . .
 Quadratic_Equations/360104: what is a quadratic equation for the given information. -sqrt2,3sqrt2.1 solutions Answer 257069 by Fombitz(13828)   on 2010-10-22 19:45:13 (Show Source): You can put this solution on YOUR website!You mean these are the roots and you want the associated quadratic equation?? . . .
 Polynomials-and-rational-expressions/360096: Simplify: (x^2 - 4)/(3x-15)/(x+2)/(x-5)1 solutions Answer 257068 by Fombitz(13828)   on 2010-10-22 19:42:16 (Show Source):
 Square-cubic-other-roots/359985: x^2-6x+8=01 solutions Answer 256921 by Fombitz(13828)   on 2010-10-22 08:39:30 (Show Source): You can put this solution on YOUR website! . . . What's your question?