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# Recent problems solved by 'Alan3354'

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 expressions/468924: HOW DO YOU SOLVE THE PROBLOM 4-2(4)-6 1 solutions Answer 321739 by Alan3354(30993)   on 2011-07-10 16:46:20 (Show Source): You can put this solution on YOUR website!Solve it for what?
 Pythagorean-theorem/468948: The shorter leg of a right triangle is 9 meters. The hypotenuse is 1 meter longer than the longer leg. Find the length of the longer leg1 solutions Answer 321738 by Alan3354(30993)   on 2011-07-10 16:45:02 (Show Source): You can put this solution on YOUR website! Can you finish it?
 Rate-of-work-word-problems/468944: what kind of essay people and places? 1 solutions Answer 321735 by Alan3354(30993)   on 2011-07-10 16:38:51 (Show Source): You can put this solution on YOUR website!Verbal? ----------- PS Why is a duck so much alike?
 Pythagorean-theorem/468952: The hypotenuse of a right triangle is 10 inches. The lengths of the two legs are given by two consecutive even integers. Find the lengths of the two legs. 1 solutions Answer 321733 by Alan3354(30993)   on 2011-07-10 16:38:02 (Show Source): You can put this solution on YOUR website!6 & 8
 Pythagorean-theorem/468955: The length of a rectangle is 3 more than the width. The area is 18 square inches. Find the dimensions. 1 solutions Answer 321732 by Alan3354(30993)   on 2011-07-10 16:37:21 (Show Source): You can put this solution on YOUR website!3 by 6 inches
 Quadratic-relations-and-conic-sections/468949: I need help to find the vertex, focus, and the directix of this parabola problem: y^2 – 12y + 16 – 20x = 0 1 solutions Answer 321730 by Alan3354(30993)   on 2011-07-10 16:33:23 (Show Source): You can put this solution on YOUR website!What sort of help?
 Rate-of-work-word-problems/468946: what kind of essay is people and places? 1 solutions Answer 321727 by Alan3354(30993)   on 2011-07-10 16:30:14 (Show Source): You can put this solution on YOUR website!Could be fiction or non-fiction?
 Permutations/468943: find the average of the following sets of intergers. 1. -71,49,-232,58,-64 2. 778,-229,12,-781 solutions Answer 321723 by Alan3354(30993)   on 2011-07-10 16:21:54 (Show Source): You can put this solution on YOUR website!find the average of the following sets of intergers. 1. -71,49,-232,58,-64 Add them, divide by the # of elements. 2. 778,-229,12,-78 ---------------- PS It's integers, not intergers.
 test/468941: Short Answer: Raise the quantity in parentheses to the indicated exponent, and simplify the resulting expression. Express answers with positive exponents. (-23x^4y^0/92x^-2y^-3)^-31 solutions Answer 321721 by Alan3354(30993)   on 2011-07-10 16:20:32 (Show Source): You can put this solution on YOUR website! 92 = 4*23 y^0 = 1 = Multiply NUM and Den by x^2 = Multiply NUM and Den by y^3 = Invert to change exponent from -3 to +3 = =
 Rectangles/468908: Suppose that a cliff diver's height (in feet) after seconds is given by the model Find the height after 0.75 seconds. 1 solutions Answer 321717 by Alan3354(30993)   on 2011-07-10 16:15:14 (Show Source): You can put this solution on YOUR website!What model?
 expressions/468864: Could someone so kindly help me out on this one, would really appreciate it. Thank You! Simplify. Please show all of your work. 15-2^3/4*7-71 solutions Answer 321687 by Alan3354(30993)   on 2011-07-10 11:30:16 (Show Source): You can put this solution on YOUR website!It's ambiguous. Add some parentheses.
 Equations/468831: Factor completely: ax-a+bx-b1 solutions Answer 321685 by Alan3354(30993)   on 2011-07-10 11:29:17 (Show Source): You can put this solution on YOUR website!ax-a+bx-b = ax + bx - (a+b) = x(a+b) - 1(a+b) = (x-1)*(a+b)
 logarithm/468838: Solve Algebraically, approx. answer to 3 decimal places 5(10^(x-6) = 7 I have divided both sides by 5 and got 10^(x-6) = 7/5 but what are the remaining steps?1 solutions Answer 321684 by Alan3354(30993)   on 2011-07-10 11:27:25 (Show Source): You can put this solution on YOUR website!Solve Algebraically, approx. answer to 3 decimal places 5(10^(x-6) = 7 ------------------ x-6 = log(1.4) x = log(1.4) + 6 x =~ 6.146
 Trigonometry-basics/468871: If b = 3, and c = 5, cos Θ =?1 solutions Answer 321683 by Alan3354(30993)   on 2011-07-10 11:24:39 (Show Source): You can put this solution on YOUR website!No idea. Not enough info.
 Linear_Algebra/468780: The Washington Monument is 555 ft high. How long would it take an object to fall freely from the top? 1 solutions Answer 321679 by Alan3354(30993)   on 2011-07-10 11:17:49 (Show Source): You can put this solution on YOUR website!s = 16t^2 is commonly used 555 = 16t^2 t =~ 5.89 seconds
 Geometry_Word_Problems/468843: From a mountain 4000 feet above a fort, its angle of depression is 16degrees 45minutes. Find the line-of-sight distance from the mountain to the fort.1 solutions Answer 321670 by Alan3354(30993)   on 2011-07-10 09:48:47 (Show Source): You can put this solution on YOUR website!sin(16.75) = 4000/d d = 4000/sin(16.75) d =~ 13879 ft
 Travel_Word_Problems/468841: How far do I travel at 30mph in 660 miliseconds? How far do I travel at 10mph in 220 miliseconds? Thank you for your help!!1 solutions Answer 321669 by Alan3354(30993)   on 2011-07-10 09:44:05 (Show Source): You can put this solution on YOUR website!How far do I travel at 30mph in 660 miliseconds? 30 mph = 44 ft/sec (you can confirm that if you like) 44 ft/sec * 0.66 seconds = 29.04 feet --------------- How far do I travel at 10mph in 220 miliseconds? That's 1/3 as fast for 1/3 the time --> 1/9 the distance 29.04/9 = 3.22666.. ft = 38.72 inches
 Graphs/468834: what is the ordered pair of y=10/9x+31 solutions Answer 321665 by Alan3354(30993)   on 2011-07-10 08:44:20 (Show Source): You can put this solution on YOUR website!There are an infinite number of them. Pick any value of x and solve for y. Each is an ordered pair, a point on the line.
 Miscellaneous_Word_Problems/468809: An airplane descended 150m from an altitude of 650m and then ascended 830 immediately.at what altitude was the airplane flying?1 solutions Answer 321664 by Alan3354(30993)   on 2011-07-10 08:43:17 (Show Source): You can put this solution on YOUR website!650 - 150 + 830 = 1330 meters
 Geometry_Word_Problems/468836: An artillery observer in an airplane agrees that when he gets above a target which is invisible from the guns he will level off at 10,000 feet elevation. If at that instant his angle of elevation as seen from the guns is 28degrees 20minutes, find the distance from the guns to the target. 1 solutions Answer 321663 by Alan3354(30993)   on 2011-07-10 08:40:20 (Show Source): You can put this solution on YOUR website!10000/tan(28.333) = distance in feet
 Travel_Word_Problems/468786: A car travels at 95 km/hr for 2 hrs. at 65 km/hr for the next 3 hrs and finally at 75 km/hr for 1 hr. what is the average speed for the entire time of travel?1 solutions Answer 321661 by Alan3354(30993)   on 2011-07-10 08:38:04 (Show Source): You can put this solution on YOUR website!Find all the 3 distances, eg, 95*2 = 190 km Add them. Divide by the total time. That's the average.
 Functions/468782: f(x)=4.5e^t1 solutions Answer 321660 by Alan3354(30993)   on 2011-07-10 08:36:44 (Show Source): You can put this solution on YOUR website!And what's your question?
 Volume/468830: what is the cubic feet of a circle measuring 6 foot x 4 inches1 solutions Answer 321659 by Alan3354(30993)   on 2011-07-10 08:35:54 (Show Source): You can put this solution on YOUR website!A circle is a plane figure, 2 dimensional. It has no volume.
 Evaluation_Word_Problems/468758: This question is about Factoring the sum and difference of two cubes. b(cube) +125 =1 solutions Answer 321624 by Alan3354(30993)   on 2011-07-09 22:45:38 (Show Source): You can put this solution on YOUR website!Hint:
 Linear-equations/468730: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -15r + 12s = 24 30r – 24s = 481 solutions Answer 321601 by Alan3354(30993)   on 2011-07-09 19:36:50 (Show Source): You can put this solution on YOUR website! -15r + 12s = 24 times -2 --> 30r - 24s = -48 30r – 24s = 48 30r - 24s = -48 --------------- Subtract 0 = 96 --> no solutions If you graph them, they're parallel. No intersection, no solution.
 Linear-equations/468668: How do I solve the system in matrices?: {x+y=2 {x-y=-4 {2x+y=1 and {x+y=4 {2x-y=21 solutions Answer 321571 by Alan3354(30993)   on 2011-07-09 16:39:31 (Show Source): You can put this solution on YOUR website!How do I solve the system in matrices?: {x+y=2 {x-y=-4 {2x+y=1 You have 3 eqns in x & y ?? {x+y=2 {x-y=-4 --------- 2x = -2 x = -1 ------- y = 3 --------- You can solve an augmented 2 by 2 matrix with any 2 of the 3 equations. If you assume 0z for each and make it 3 by 3, z is undefined anyway. ------------------ and {x+y=4 {2x-y=2 ---------- |1 1 -4| |2-1 -2| Det = -1-2 = -3 --------- Dx = -2 -4 = -6 x = Dx/Det = 2 ---------- -Dy = -2 + 8 = 6 y = -6/Det = 2 ---------------- x = 2 y = 2
 Probability-and-statistics/468678: Find the minimum and maximum possible areas of a rectangle measuring 2 km by 5 km.1 solutions Answer 321568 by Alan3354(30993)   on 2011-07-09 16:31:58 (Show Source): You can put this solution on YOUR website!2*5 = 10 sq km
 Linear-equations/468665: Please help me with this algebra problem. Thanks in advance. Solve. The houses on the north side of polk avenue are consecutive odd numbers. Bob and Laura are next door neighbors and the sum of there houses is 524. Find both house numbers.1 solutions Answer 321566 by Alan3354(30993)   on 2011-07-09 16:12:19 (Show Source): You can put this solution on YOUR website!524/2 = 262, the center --> 261 & 263
 Exponential-and-logarithmic-functions/468587: Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution. e3x - 2 - 4 = 1073 1 solutions Answer 321532 by Alan3354(30993)   on 2011-07-09 11:52:59 (Show Source): You can put this solution on YOUR website!What is the exponent?
 Linear_Algebra/468584: Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions. x + y = -8 x + y = 5 1 solutions Answer 321521 by Alan3354(30993)   on 2011-07-09 11:09:47 (Show Source): You can put this solution on YOUR website!x+y can't be both -8 and 5. The 2 graphs are parallel lines. No intersection, no solution.
 Geometric_formulas/468552: how to find length of an arc of a circle when we don't know the radius and angle of the circle? 1 solutions Answer 321518 by Alan3354(30993)   on 2011-07-09 10:19:13 (Show Source): You can put this solution on YOUR website!What do you know?