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# Recent problems solved by 'Fombitz'

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 Triangles/373965: the measure of two sides of an eqilateral triangle are 3x+15 and 7x-5.what is the measure of the third side?1 solutions Answer 266161 by Fombitz(13828)   on 2010-11-20 10:26:44 (Show Source): You can put this solution on YOUR website!Since it's equilateral, . . . All sides have a length of .
 Equations/373967: Simplify 2x^2+4x-1/3x^21 solutions Answer 266160 by Fombitz(13828)   on 2010-11-20 10:25:18 (Show Source):
 Money_Word_Problems/373978: A mother left 20% of her estate to one son and 25% to another son. The remaining \$55,000 she left to her daughter. Find the amount of the estate.1 solutions Answer 266159 by Fombitz(13828)   on 2010-11-20 10:23:27 (Show Source): You can put this solution on YOUR website!Let X be the amount she left to the first son, Y the amount for the second son, T the total amount of the estate.
 Quadratic_Equations/373975: Determine nature of solution y^2=3/4y+4/71 solutions Answer 266157 by Fombitz(13828)   on 2010-11-20 10:21:25 (Show Source): You can put this solution on YOUR website! Use the discriminant, Since , there are two real roots. Since is not a perfect square, the two roots are irrational. . . .
 Points-lines-and-rays/373718: Please help me with this!! Can an exterior angle of a triangle be less than either of the remote interior angles of the triangle? 1 solutions Answer 266128 by Fombitz(13828)   on 2010-11-20 01:28:03 (Show Source): You can put this solution on YOUR website! . . . . . . No, because each exterior angle equals 180 plus the sum of the remaining two interior angles.
 Numeric_Fractions/373859: what is 5 1/3-2 11/18 in lowest terms please show steps1 solutions Answer 266127 by Fombitz(13828)   on 2010-11-20 01:22:43 (Show Source): You can put this solution on YOUR website!USe a common denominator . .
 Numeric_Fractions/373858: what is 8/25-7/10-3/5 and please show steps1 solutions Answer 266126 by Fombitz(13828)   on 2010-11-20 00:44:26 (Show Source): You can put this solution on YOUR website!You need a common denominator . . . . . .
 Probability-and-statistics/373867: Four unmarked packages have lost their shipping labels, and you must reapply them. What is the probability that you apply the labels and get all four of them correct? Exactly three correct? Exactly two correct? At least one correct?1 solutions Answer 266124 by Fombitz(13828)   on 2010-11-20 00:40:51 (Show Source): You can put this solution on YOUR website!Look at all of the possible outcomes for incorrect(I) and correct(C) placement of labels on each of the 4 boxes. There are possible outcomes. has exactly correct. have exactly correct. have exactly correct. have exactly correct. has exactly correct. . . The probability that the label is correct is . The probability that the label is incorrect is . . . At least one correct means that its not the case that all four are incorrect. So then either all 4 are incorrect or at least one is correct. P(at least 1 C)+P(4I)= P(at least 1 C)= P(at least 1 C)= P(at least 1 C)=
 Probability-and-statistics/373835: Write the distribution for the following formula and determine whether it is a probability distribution. P(X) ___X___ for X = 0,1,2 X+2 1 solutions Answer 266120 by Fombitz(13828)   on 2010-11-20 00:26:52 (Show Source): You can put this solution on YOUR website! . . No, this is not a probability distribution since the sum of of all of the probabiites does not equal 1.
 Linear-equations/373909: Find a line perpendicular to: 6x -4y = 13 + y1 solutions Answer 266118 by Fombitz(13828)   on 2010-11-20 00:16:51 (Show Source): You can put this solution on YOUR website! Perpendicular lines have slopes that are negative reciprocals, . . . . . .
 logarithm/373788: A certain city's population currently is 80,000. City leaders anticipate the population in future years can be predicted by the equation P(t)=80000(1.03)^t. When will the population reach 200,000 or more?1 solutions Answer 266116 by Fombitz(13828)   on 2010-11-20 00:13:54 (Show Source): You can put this solution on YOUR website! or approximately, We can round up to years.
 Polynomials-and-rational-expressions/373776: Could anyone explain this to me?? I need all the help I can get! thank you! Find a value of the variable that shows that the two expressions are not equivalent. Answers may vary. a + 7 / 7 ;a 1 solutions Answer 266104 by Fombitz(13828)   on 2010-11-19 23:45:49 (Show Source): You can put this solution on YOUR website!DUPLICATE See Quadratic_Equations/373865
 Quadratic-relations-and-conic-sections/373861: Rewrite in standard form (ellipse): 36x^2+25y^2+72x+250y-239=01 solutions Answer 266102 by Fombitz(13828)   on 2010-11-19 23:43:03 (Show Source): You can put this solution on YOUR website!Complete the square in and .
 Equations/373804: Find all real/imaginary solutions to q^2+6q-7=0 1 solutions Answer 266100 by Fombitz(13828)   on 2010-11-19 23:38:20 (Show Source): You can put this solution on YOUR website! Two solutions: . . .
 expressions/373779: (48a+b)-(-22a-6b) how do i do this? do I take it like this: (48a+22a)-(b-6b) and how does it become 70a+9b?1 solutions Answer 266098 by Fombitz(13828)   on 2010-11-19 23:36:33 (Show Source): You can put this solution on YOUR website!Use the distributive property for the second term,
 Equations/373847: d=D(a+1)/241 solutions Answer 266096 by Fombitz(13828)   on 2010-11-19 23:33:47 (Show Source): You can put this solution on YOUR website!What's the question??
 Polynomials-and-rational-expressions/373863: 6-2x=5x-9x+41 solutions Answer 266095 by Fombitz(13828)   on 2010-11-19 23:33:21 (Show Source):
 Radicals/373893: How do i simplify the following expression. (x^5)1/3 /x 11/31 solutions Answer 266094 by Fombitz(13828)   on 2010-11-19 23:32:14 (Show Source):
 Triangles/373873: Two angles are complementary.The sum of the measure of the frst angle and half the second angle is 71 degrees. Find the measures of the angles.1 solutions Answer 266093 by Fombitz(13828)   on 2010-11-19 23:30:41 (Show Source): You can put this solution on YOUR website!1. 2. Subtract eq. 2 from eq. 1, degrees Then from eq. 1, degrees
 Graphs/373896: (8,9)9x+y=31 solutions Answer 266092 by Fombitz(13828)   on 2010-11-19 23:28:37 (Show Source): You can put this solution on YOUR website!When (,) . . When (,) . . . Plot those points and connect them with a line. . . .
 Numbers_Word_Problems/373904: The square of a number is equal to twenty more than the number. Find all such numbers.1 solutions Answer 266091 by Fombitz(13828)   on 2010-11-19 23:26:08 (Show Source): You can put this solution on YOUR website! Two solutions: . . .
 Linear_Algebra/373905: Hello, Can anyone explain why vertical lines fail the "vertical line" test in an easy explanation? Thanks1 solutions Answer 266090 by Fombitz(13828)   on 2010-11-19 23:24:33 (Show Source): You can put this solution on YOUR website!Because a vertical line intersects the vertical line in infinitely many locations. More than 1 intersections is a failure.
 logarithm/373792: Find the exponential function f(x)=ab^x that goes through (0,40) and (8,25)1 solutions Answer 266089 by Fombitz(13828)   on 2010-11-19 23:22:47 (Show Source): You can put this solution on YOUR website! . . .
 Equations/373810: find the equation of the line perpendicular to the line x =4 and passing through the point (4,2) 1 solutions Answer 266088 by Fombitz(13828)   on 2010-11-19 23:17:27 (Show Source): You can put this solution on YOUR website!A perpendicular line would have the form, . . .
 Exponents/373805: how do you write 1/36 using a negative exponet other tha -1?1 solutions Answer 266087 by Fombitz(13828)   on 2010-11-19 23:16:04 (Show Source):
 Graphs/373849: hoe do you do f(x)=1/2x+6 on a graph1 solutions Answer 266086 by Fombitz(13828)   on 2010-11-19 23:15:02 (Show Source): You can put this solution on YOUR website! Find two points. Let , (,) Let , (,) Plot those two points and connect them with a line, . . .
 Signed-numbers/373903: Simplify the quotient of complex numbers into a + bi form 1 + 8i/-6 + i1 solutions Answer 266085 by Fombitz(13828)   on 2010-11-19 23:10:42 (Show Source):
 Quadratic_Equations/373865: Find a value of the variable that shows that the two expressions are not equivalent. Answers may vary. a + 7 / 7 ;a1 solutions Answer 266083 by Fombitz(13828)   on 2010-11-19 23:06:51 (Show Source): You can put this solution on YOUR website!Let 1. 2.
 Linear-equations/373872: How do you simplify the given complex fraction? 1-a over a negative one squared minus 1 1 solutions Answer 266082 by Fombitz(13828)   on 2010-11-19 23:05:45 (Show Source): You can put this solution on YOUR website!How do you mean "a negative 1 squared minus 1" or or something else.
 test/373890: Your question goes here. Write clearly! We are not mind readers, so be sure to ask a question that we can understand.1 solutions Answer 266081 by Fombitz(13828)   on 2010-11-19 23:04:30 (Show Source): You can put this solution on YOUR website!Please re-post.
 Graphs/373902: Write an equation of the line with the given slope and the given y-intercept. Leave the answer in slope-intercept form. Slope -2/3, y-intercept (0,5)1 solutions Answer 266079 by Fombitz(13828)   on 2010-11-19 23:04:08 (Show Source): You can put this solution on YOUR website!Slope intercept form is