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# Recent problems solved by 'Alan3354'

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 Polynomials-and-rational-expressions/304622: 6-16x²=2y ; x=-1 y=-51 solutions Answer 218112 by Alan3354(30993)   on 2010-05-14 14:53:00 (Show Source): You can put this solution on YOUR website!6-16x²=2y ; x=-1 y=-5 ------------ The equation is that of a parabola. The point (-1,-5) is on the parabola. Do you have a question?
 Quadratic-relations-and-conic-sections/304598: what is the midpoint of the segment joint (3,5) and (-6,11)?1 solutions Answer 218097 by Alan3354(30993)   on 2010-05-14 14:17:04 (Show Source): You can put this solution on YOUR website!what is the midpoint of the segment joint (3,5) and (-6,11)? -------------------- Find the average of x and of y x: (3-6)/2 = -3/2 y: (5+11)/2 = 8 --> (-3/2,8) midpoint
 Number-Line/304588: Does the absolute value have anything to do with Heron's formula? 1 solutions Answer 218081 by Alan3354(30993)   on 2010-05-14 12:24:48 (Show Source): You can put this solution on YOUR website!no
 Linear-equations/304578: Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form where possible. (-4,1) and (3,1) I think I did it correctly but not sure to have the equations: y = 0/7x + 11/7 for the point(-4, 1) and y = 0/7x + 4/7 for the point(3,1)1 solutions Answer 218070 by Alan3354(30993)   on 2010-05-14 11:20:56 (Show Source): You can put this solution on YOUR website!Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form where possible. (-4,1) and (3,1) You need 1 equation of 1 line that goes thru both points. -------------- In both points, y = 1 That's the equation: y = 1
 Linear-systems/304350: Can you mutiply unlike terms?1 solutions Answer 217943 by Alan3354(30993)   on 2010-05-13 18:51:00 (Show Source): You can put this solution on YOUR website!Yes, I can.
 Travel_Word_Problems/304330: 715 is to 990 as what is to 850?1 solutions Answer 217942 by Alan3354(30993)   on 2010-05-13 18:50:33 (Show Source): You can put this solution on YOUR website!715 is to 990 as what is to 850? ---------- 715/990 = x/850 990x = 715*850 x = 715*850/990 x = 5525/9
 Graphs/304346: Graphically solve the system of linear equations. (steps would be appreciated) y= -2 x= 31 solutions Answer 217940 by Alan3354(30993)   on 2010-05-13 18:47:35 (Show Source): You can put this solution on YOUR website!It's solved. y = -2 The graph is a straight line parallel to the x-axis thru (0,-2) x = 3 The graph is a straight line parallel to the y-axis thru (3,0)
 Exponents/304327: B to the 2nd power minus 12B minus 38 How would you factor this with the greatest common factors?1 solutions Answer 217937 by Alan3354(30993)   on 2010-05-13 18:44:55 (Show Source): You can put this solution on YOUR website!That's not factorable using integers. -------------- How would you factor this with the greatest common factors? I don't know what that means.
 decimal-numbers/304343: Which decimal is greater 0.4 or 0.24? 1 solutions Answer 217936 by Alan3354(30993)   on 2010-05-13 18:43:14 (Show Source): You can put this solution on YOUR website!0.4
 Polynomials-and-rational-expressions/304334: How do you simplify or solve I have tried 9x= 10x- 30 1 solutions Answer 217934 by Alan3354(30993)   on 2010-05-13 18:41:21 (Show Source): You can put this solution on YOUR website!I have tried 9x= 10x- 30 -x = -30 x = 30
 Polynomials-and-rational-expressions/304278: how do i solve: (x-1) over (x-2)(x+4)1 solutions Answer 217930 by Alan3354(30993)   on 2010-05-13 16:48:14 (Show Source): You can put this solution on YOUR website!There's nothing to solve. Equations are solved, this is not an equation. It cannot be simplified, either.
 Quadratic_Equations/304268: How do you graph a quadratic equation into a parabola? For example: y=x^2+4x+31 solutions Answer 217927 by Alan3354(30993)   on 2010-05-13 16:31:58 (Show Source): You can put this solution on YOUR website!Pick values for x and find y. Plot the points, draw a curve thru them. Same as any other graph.
 Average/304235: which of the following correctly identifies 4 consecutive odd integers where the sum of the middle two integers is equal to 24?1 solutions Answer 217919 by Alan3354(30993)   on 2010-05-13 16:09:49 (Show Source): You can put this solution on YOUR website!24/2 = 12, which is the center --> 9, 11, 13, 15
 Quadratic_Equations/304256: the three sides of a right triangle are consecutive even integers. what is the length of each side ty1 solutions Answer 217918 by Alan3354(30993)   on 2010-05-13 16:04:40 (Show Source): You can put this solution on YOUR website!6, 8 & 10
 Inequalities/304099: i just don't understand this 3x-7<2x+1 Can you please show me step by step? thank you1 solutions Answer 217862 by Alan3354(30993)   on 2010-05-13 08:54:11 (Show Source): You can put this solution on YOUR website!3x-7<2x+1 ---------- The object is to solve for x, meaning to get x on the left side by itself. 3x-7<2x+1 Add 7 3x<2x+8 Subtract 2x x<8 x is less than 8 ---------------------- That's all. It's the same as if the < were an equal sign (in this case).
 Equations/304112: 1. x=-b+ - spuare root b^2 - 4ac ________________________ 2a What does plus on top of the minus sign mean? 2. 5-3(2x-3) 3. x^2 - 6x ________ x^2 - 36 1 solutions Answer 217861 by Alan3354(30993)   on 2010-05-13 08:50:25 (Show Source): You can put this solution on YOUR website!It means there are 2 solutions, one + and one minus. eg, 5 +/- 2 = 3 and 7
 Points-lines-and-rays/304109: what is the slope intercept form and the standard form for the following coordinates? (1/2, 1/4), (2,0)1 solutions Answer 217859 by Alan3354(30993)   on 2010-05-13 08:43:07 (Show Source): You can put this solution on YOUR website!what is the slope intercept form and the standard form for the following coordinates? (1/2,1/4), (2,0) ---------------------- Coordinates do not have a slope-intercept form. Coordinates do not have an equation, they are just points. ------------------- If you meant the equation of the line passing thru the pair of points: Given 2 points example. Find the equation of the line thru the points (2,1) and (3,5) --------------------- This is a 2 step process. First find the slope of the line thru the points. slope, m = diffy/diffx m = (5-1)/(3-2) m = 4 --------- Now use y = mx + b with either point to find b, the y-intercept. y = mx + b 5 = 4*3 + b b = -7 ------- y = mx + b y = 4x - 7 is the answer. ------------------------ Another approach using determinants: |x y 1| |2 1 1| = 0 |3 5 1| -------- x(1-5) - y(2-3) + 1(10-3) = 0 -4x + y + 7 = 0 y = 4x - 7 --------- For further assistance, or to check your work, email me via the thank you note or at Moral Loophole@aol.com
 test/304083: Sandra wants to place a utilitarian door on the back entrance that leads to her patio. The solid plastic laminate door will be shaped like a rectangular solid and will measure 72 3/4 inches long and 32 2/3 inches wide; and will be 1 3/8 inch thick. How many cubic inches of plastic laminate material will be needed for the door? Give solution exactly as a mixed number. Include correct units with your answer. 1 solutions Answer 217858 by Alan3354(30993)   on 2010-05-13 08:38:41 (Show Source): You can put this solution on YOUR website!Length = 72 3/4 = 291/4 Width = 32 2/3 = 98/3 Thickness = 1 3/8 = 11/8 Volume = (291/4)*(98/3)*(11/8) = 313698/96 = 52283/16 = 3267 11/16 cubic inches -------------------------- Mixed numbers are not very useful.
 Graphs/304106: You solved a system of equations by the algebraic and graphical methods. What do you see to be the basic differences between the two methods? 1 solutions Answer 217857 by Alan3354(30993)   on 2010-05-13 08:29:19 (Show Source): You can put this solution on YOUR website!An algebraic solution is exact. Graphs can be done in color.
 Length-and-distance/304102: The following are coordinates of points in the xy-plane . which of these points is nearest the origin ? a (0,-1) b (0,1/2) c (1/2,-1/2) d (1/2,1/2) e (-1,-1) 1 solutions Answer 217856 by Alan3354(30993)   on 2010-05-13 08:20:09 (Show Source):
 Volume/303953: Write the cosine of a 50 degree angle? 1 solutions Answer 217785 by Alan3354(30993)   on 2010-05-12 21:27:07 (Show Source): You can put this solution on YOUR website!Your calculator needs a battery? cos(50) =~ 0.6427876
 Polynomials-and-rational-expressions/303988: which of the following is a polynomial of x^2-x-20 how would i figure this out1 solutions Answer 217768 by Alan3354(30993)   on 2010-05-12 21:10:07 (Show Source): You can put this solution on YOUR website!There's nothing following.
 Exponents/303998: If x and y are integers, which of the following is equivalent to A. (2x)^2y B. 2^y(x^3-x^y) C. (2x)^y[(2x)^2y-1] D. (2x)^y(4x^y-1) E. (2x)^y[(2x)^3-1] when you solve can you show me how please!!1 solutions Answer 217767 by Alan3354(30993)   on 2010-05-12 21:09:01 (Show Source): You can put this solution on YOUR website! If x and y are integers, which of the following is equivalent to A. (2x)^2y B. 2^y(x^3-x^y) C. (2x)^y[(2x)^2y-1] D. (2x)^y(4x^y-1) E. (2x)^y[(2x)^3-1] --------------------- A is a monomial, so it's out. --------------------- B. 2^y(x^3-x^y) = 2^y*x^3 - 2^y*x*2y That's not it ----------------- C. (2x)^y[(2x)^2y-1] = (2x)^3y - (2x)^y That's it. It's C
 logarithm/303957: Please Help!!!!!!!!!!!! 2(x + 1) = 4 1 solutions Answer 217759 by Alan3354(30993)   on 2010-05-12 20:54:16 (Show Source): You can put this solution on YOUR website!2(x + 1) = 4 x + 1 = 2 x = 1 What else could it be?
 logarithm/303926: How do I solve this without a calculator? 1/27=3^2x1 solutions Answer 217757 by Alan3354(30993)   on 2010-05-12 20:04:31 (Show Source): You can put this solution on YOUR website!It could be either of the 2 solutions. Parentheses are free. Use some.
 logarithm/303963: PLease help!!!!!!!!!!!!! logπ 801 solutions Answer 217756 by Alan3354(30993)   on 2010-05-12 20:02:32 (Show Source): You can put this solution on YOUR website!Use the base change: =~ 3.828
 Square-cubic-other-roots/303904: What is the square root of 281 solutions Answer 217724 by Alan3354(30993)   on 2010-05-12 18:51:01 (Show Source): You can put this solution on YOUR website!It's 2*sqrt(7) ------------- Do you not have a calculator? =~ 5.2915
 Surface-area/303879: What is the maximum number of day's worth of food you can package for \$200? Give the dimensions, volume, and SA/V ratio.1 solutions Answer 217721 by Alan3354(30993)   on 2010-05-12 18:49:11 (Show Source): You can put this solution on YOUR website!That makes no sense.
 Surface-area/303823: Find the area of a regular hexagon with the given measurement. 6-inch radius A = sq. in 1 solutions Answer 217686 by Alan3354(30993)   on 2010-05-12 16:36:04 (Show Source): You can put this solution on YOUR website!The sides of a regular hexagon are the same as the radius. -------------- The area of any regular polygon with n sides of length s is: = = 54cot(30) = 54sqrt(3) =~ 93.53 sq in
 Triangles/303800: i need to find the altitude of the isoceles triangle. They gave me theda=52 degrees and b=4 inches1 solutions Answer 217671 by Alan3354(30993)   on 2010-05-12 16:11:54 (Show Source): You can put this solution on YOUR website!If b is the base and forms and is part of the 52 deg angle, then h = b*sin(52) Area = bh/2 = b*b*sin(52)/2 = 8*sin(52) =~ 6.304 sq inches -------------- PS It's theta
 Graphs/303790: Solve by elimination 5r-6s=-7 6r+5s=771 solutions Answer 217666 by Alan3354(30993)   on 2010-05-12 15:50:13 (Show Source): You can put this solution on YOUR website!5r-6s=-7 --> 25r - 30s = -35 6r+5s=77 --> 36r + 30s = 462 ----------------------------- Add 61r = 427 r = 7 ------- s = 7