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# Recent problems solved by 'Alan3354'

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 Numeric_Fractions/387885: solve these three problems. y= -3/2(-2)+1 y= -3/2(4)+1 y= -3/2(6)+1 1 solutions Answer 274201 by Alan3354(30993)   on 2010-12-19 17:12:52 (Show Source): You can put this solution on YOUR website!solve these three problems. y= -3/2(-2)+1 = 3 + 1 = 4 --------------- y= -3/2(4)+1 Multiply 4 by -3/2 and add 1. ---------------- y= -3/2(6)+1
 Miscellaneous_Word_Problems/387884: Preform the indicated operation. Wright the answer in scientific notation. ( 6 x 10^-2)(5.67 x 10^3) This is how I put this into the calculator and I got 385.344. I move the decimal over two places to get the answer 3.85 x 10^2. What happened to the .344? I am studying for a test and I have the answers for the pre-test and I am allowed to use the calculator on the test. I t will help so much if I really knew how to use it. 1 solutions Answer 274200 by Alan3354(30993)   on 2010-12-19 17:11:17 (Show Source): You can put this solution on YOUR website!( 6 x 10^-2)(5.67 x 10^3) = 6*5.67*10^1 = 34.02*10 = 3.402*10^2 ------------- How did you get 385.344 ?
 Miscellaneous_Word_Problems/387874: John wants to fence a 150 square meters rectangular field. He wants the legnth and width to be natural numbers. What field dimension will require the least amount of fencing?1 solutions Answer 274199 by Alan3354(30993)   on 2010-12-19 17:07:53 (Show Source): You can put this solution on YOUR website!The length and width would be the factors of 150. 150 = 1 x 150 2 x 75 3 x 50 5 x 30 10 x 15 -------- 10 by 15 is the smallest perimeter.
 logarithm/387889: 9 1/2=3 convert to a logarithmic equation 1 solutions Answer 274198 by Alan3354(30993)   on 2010-12-19 17:04:53 (Show Source): You can put this solution on YOUR website!9.5 does not equal 3.
 Radicals/387827: How do I solve: (5 sqrt10 + 7 sqrt5)(2 sqrt5 + sqrt10) sorry but there is no square root button on the keyboard. I hope you can understand where the square roots are. Thank You.1 solutions Answer 274197 by Alan3354(30993)   on 2010-12-19 17:04:13 (Show Source): You can put this solution on YOUR website!There's nothing to solve, it's not an equation. Multiply it, the same as any other binomials.
 Expressions-with-variables/387861: Can you help me with this question? If a bride and groom want to serve a nut mixture containing 25% nut peanuts, and the bride has available mixtures that are either 40% or 10% peanuts, how much of each type should be mixed to get 10lb that are 25% peanuts? Thank you! Shelly1 solutions Answer 274196 by Alan3354(30993)   on 2010-12-19 17:00:59 (Show Source): You can put this solution on YOUR website!Since 25% is the midpoint of 10 and 40, it's equal amounts.
 Linear-systems/387887: solve the system x-y-5z+-13 4x+2y+2z=6 3x-2y+2z=241 solutions Answer 274195 by Alan3354(30993)   on 2010-12-19 16:59:17 (Show Source): You can put this solution on YOUR website!The 1st line has no equal sign.
 Exponents/387800: Simplify and express your answer using positive exponents only. (x2/5)3/21 solutions Answer 274194 by Alan3354(30993)   on 2010-12-19 16:58:36 (Show Source): You can put this solution on YOUR website!I don't see any exponents.
 Linear-systems/387815: solve the lnear equatin by using elimnation x+5y=28 -x-2y=-131 solutions Answer 274150 by Alan3354(30993)   on 2010-12-19 12:57:10 (Show Source): You can put this solution on YOUR website!Add the 2 equations.
 Square-cubic-other-roots/387744: Add. Simplify if possible (3r)/(r^(2)-25) + (r)/(r-5) for this I ended up with r(r+8)/(r-5)(r+5) is this right???1 solutions Answer 274132 by Alan3354(30993)   on 2010-12-19 09:30:37 (Show Source): You can put this solution on YOUR website!Add. Simplify if possible = (((3r/(r^2-25) + r(r+5)/(r^2-25)}}} = = r(r+8)/(r-5)(r+5) Same thing. ------------------ for this I ended up with r(r+8)/(r-5)(r+5) is this right???
 Square-cubic-other-roots/387743: Multiply (4√(5)-12√(7))*(5√(5)+15√(7)) I honestly don't even know where to start!!1 solutions Answer 274131 by Alan3354(30993)   on 2010-12-19 09:21:47 (Show Source): You can put this solution on YOUR website! Multiply the terms the same as in any multiplication of binomials. FOIL, etc. = = = 100 - 1260 = -1160
 Polynomials-and-rational-expressions/387751: Please help solve problem x^3 - 7x + 2 1 solutions Answer 274130 by Alan3354(30993)   on 2010-12-19 09:14:30 (Show Source): You can put this solution on YOUR website!It's not an equation, there's nothing to solve.
 Systems-of-equations/387752: I want to know how to calculate 32 to the power of 1/51 solutions Answer 274129 by Alan3354(30993)   on 2010-12-19 09:12:05 (Show Source): You can put this solution on YOUR website!You can use a calculator. If you know that 2^5 = 32, you can figure it out. You can use logarithms.
 Numbers_Word_Problems/387753: the sum of three consective positive integer is 315.find the number1 solutions Answer 274128 by Alan3354(30993)   on 2010-12-19 09:10:47 (Show Source): You can put this solution on YOUR website!315/3 = 105, the middle number
 Travel_Word_Problems/387691: A motorboat travels 441mi in 7 hours going upstream and 522mi in 6 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?1 solutions Answer 274075 by Alan3354(30993)   on 2010-12-18 21:54:45 (Show Source): You can put this solution on YOUR website! A motorboat travels 441mi in 7 hours going upstream and 522mi in 6 hours going downstream. What is the rate of the boat in still water and what is the rate of the current? ------------------- 441/7 = 63 mph 522/6 = 87 mph The boat's speed is the average (63 + 87)/2 = 75 mph The current is the difference 87 - 72 = 12 mph
 logarithm/387701: Please help solve 5(x-12)^1/3 + 6 =511 solutions Answer 274074 by Alan3354(30993)   on 2010-12-18 21:52:16 (Show Source): You can put this solution on YOUR website!5(x-12)^1/3 + 6 =51 What did you try? 5(x-12)^1/3 + 6 =51 5(x-12)^1/3 = 45 (x-12)^1/3 = 9 Can you finish it?
 Linear-equations/387706: Given the quadratic function f(x) = x2 – 12x + 36, find a value of x such that f(x) = 9. 1 solutions Answer 274073 by Alan3354(30993)   on 2010-12-18 21:49:27 (Show Source): You can put this solution on YOUR website!Given the quadratic function f(x) = x2 – 12x + 36, find a value of x such that f(x) = 9. ----------- f(x) = x^2 – 12x + 36 = 9 (x-9)(x-3) = 0 x = 3, x = 9
 Linear-systems/387678: I need to complete a table for this equation and I am not sure how to do so. y= -1/2x-4 x y (x,y) -1 -2 Thank you!1 solutions Answer 274057 by Alan3354(30993)   on 2010-12-18 20:20:29 (Show Source): You can put this solution on YOUR website!Pick values for x and find y If you mean y = (-1/2)x - 4: x = 0, y = -4 x = 2, y = -5 It's a straight line, so 2 points is sufficient.
 Circles/387553: An ant start at the point (1,0) on the unit circle and walks counterclockwise 3 unit around the circle. Find coordinates of y and find the location of the ant.1 solutions Answer 274031 by Alan3354(30993)   on 2010-12-18 16:15:54 (Show Source): You can put this solution on YOUR website! The angle in radians is 3 The coordinates are (cos(3), sin(3)) = (-0.98999,0.14065) That's the location of the ant. The "coordinates of y" ???
 Linear-equations/387574: I have a question here on graphs and part b asks to "evaluate g(-1) -4g(0)+g(4.5+g(5)"how do I go about solving this? What is it asking ? I understand every other part to the question.This is worth 4 marks1 solutions Answer 274030 by Alan3354(30993)   on 2010-12-18 16:11:52 (Show Source): You can put this solution on YOUR website!You have to give the function g.
 Polygons/387637: If each interior angle of a regular polygon measures 120 degrees then what would be the equation to find the number of sides,n in this polygon? 1 solutions Answer 274029 by Alan3354(30993)   on 2010-12-18 16:08:19 (Show Source): You can put this solution on YOUR website!The exterior angles are 60º (180 - 120) The sum of exterior angles for ALL polygons is 360º 360/60 = 6 sides
 Linear-equations/387640: I would like to know two things. How can you find the equation of a line, and what is the product of (a^2+2) and (4a^2-7)1 solutions Answer 274027 by Alan3354(30993)   on 2010-12-18 16:06:23 (Show Source): You can put this solution on YOUR website!How can you find the equation of a line It depends on what info you're given. ------------- what is the product of (a^2+2) and (4a^2-7) =
 Linear-equations/387607: Given the linear equation , find the y-coordinates of the points (-9, ), (-3, ), and (6,) please show work1 solutions Answer 274026 by Alan3354(30993)   on 2010-12-18 16:04:52 (Show Source): You can put this solution on YOUR website!It depends on the equation.
 Linear-systems/387443: solve by elimination method 5x+7y=12, x-4y=-31 solutions Answer 273940 by Alan3354(30993)   on 2010-12-17 21:52:17 (Show Source): You can put this solution on YOUR website!Multiply the 2nd eqn by 5, subtract from the 1st.
 Exponents/387461: rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero. 4xy-2-21 solutions Answer 273920 by Alan3354(30993)   on 2010-12-17 20:08:55 (Show Source): You can put this solution on YOUR website!What are the exponents? Do you mean ? Check some examples to see how to enter that. --------- 4xy-2-2 = 4xy - 4
 Polynomials-and-rational-expressions/387439: 3x + 1 / x1 solutions Answer 273917 by Alan3354(30993)   on 2010-12-17 20:06:53 (Show Source): You can put this solution on YOUR website!Do you have a question?
 Polynomials-and-rational-expressions/387482: 8)Perform the indicated operation. Simplify if possible. Please help!1 solutions Answer 273914 by Alan3354(30993)   on 2010-12-17 20:00:50 (Show Source): You can put this solution on YOUR website!I don't know why tutor Tara said it didn't work. That's the answer.
 Trigonometry-basics/387454: sin18+sin30=sin541 solutions Answer 273913 by Alan3354(30993)   on 2010-12-17 19:58:10 (Show Source): You can put this solution on YOUR website!That's true.
 Quadratic_Equations/387492: Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are non zero. 4xy-2-21 solutions Answer 273912 by Alan3354(30993)   on 2010-12-17 19:55:40 (Show Source): You can put this solution on YOUR website!I don't see any exponents.
 logarithm/387491: Use natural loarithms to solve the equation. Round to the nearest thoussandth. Problem: 6e^4x -2 = 3 Choices: (1) -o.448 (2) 0.327 (3) 0.067 (4) -0.046 How would you solve this? Thanks!1 solutions Answer 273911 by Alan3354(30993)   on 2010-12-17 19:54:56 (Show Source): You can put this solution on YOUR website!6e^4x -2 = 3 6e^4x = 5 e^4x = 5/6 4x = ln(5/6) x = ln(5/6)/4 x =~ -0.04558
 Equations/387464: Please help me solve. solve by the elimination method. 5x+6y=-22 x=7-5y1 solutions Answer 273892 by Alan3354(30993)   on 2010-12-17 18:39:51 (Show Source): You can put this solution on YOUR website!5x+6y=-22 x=7-5y --> x+5y=7 --------- 5x+6y=-22 x +5y= 7 Eqn 2 Multiply Eqn 2 by 5, then subtract.