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# Recent problems solved by 'solver91311'

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 �t�e�s�t/696256: A triangular plot of land has side lengths of 700 feet, 500 feet and 1000 feet. How many acres are contained in this field? ( 1 acre = 43 560 square feet). can you please help me? thanks in advance1 solutions Answer 428911 by solver91311(16868)   on 2012-12-20 18:11:28 (Show Source): You can put this solution on YOUR website! Please don't waste our time asking the same question twice. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Quadratic_Equations/696259: Find the equation of parabola with a vertex at (2,-12) that passes through the point (0,0). Can you please help me out? Thanks in advance.1 solutions Answer 428910 by solver91311(16868)   on 2012-12-20 18:10:37 (Show Source): You can put this solution on YOUR website! Already did this one. Please don't waste our time by posting the same problem twice. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Trigonometry-basics/696278: 2. For all θ where sin θ - cos θ ≠ 0, ((sin^2)(θ) - (cos^2)(θ) / (sinθ - cosθ) is equivalent to... a.sinθ - cosθ b.sinθ + cosθ c.tanθ d.-1 e.1 1 solutions Answer 428907 by solver91311(16868)   on 2012-12-20 18:07:39 (Show Source): You can put this solution on YOUR website! John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Trigonometry-basics/696281: A triangle has a base of 13 units, and the other two sides are congruent. If the side lengths are integers, what is the length of the shortest possible side? 1 solutions Answer 428906 by solver91311(16868)   on 2012-12-20 18:02:01 (Show Source): You can put this solution on YOUR website! Yhe sum of the measures of the two congruent sides must be strictly greater than the measure of the longer side. Since the two sides are congruent and their measures are integers, the sum of the measures of the two sides must be an even number. 14 is the next even integer greater than 13, so: Solve for John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Trigonometry-basics/696277: If the sum of two consecutive odd integers is 56, then the greatest integer equals: a.25 b.27 c.29 d.31 e.33 1 solutions Answer 428905 by solver91311(16868)   on 2012-12-20 17:58:34 (Show Source): You can put this solution on YOUR website! If is the larger of two consecutive odd integers, then is the smaller. Solve for John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Numbers_Word_Problems/696276: three more than twice a number is 371 solutions Answer 428904 by solver91311(16868)   on 2012-12-20 17:55:01 (Show Source): You can put this solution on YOUR website! What a clever and fascinating fact. What is it that you don't understand? What have you been asked to do? What have you tried so far? John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Quadratic_Equations/696261: A jewellery store owner studied his past records and found that on the average if he sells x articles of in one week then his weekly profit, P(x)= $can be calculated using the equation p(x) = 100x - 5x^2/3. What is his maximum weekly profit? Can you please help me? Thanks so much in advance.1 solutions Answer 428902 by solver91311(16868) on 2012-12-20 17:53:34 (Show Source): You can put this solution on YOUR website! Depends. Do you mean: or Use parentheses to eliminate ambiguities when you render expressions in plain text. For further information on plain text rendering of math see: Formatting Math as Text. Be sure to look at all four pages. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Rational-functions/696265: Can someone tell me all the zeros for the equation x^4+x^3-x^2-21 solutions Answer 428901 by solver91311(16868) on 2012-12-20 17:43:21 (Show Source): You can put this solution on YOUR website! No. You cannot find the zeros of an equation that is not an equation. There is no equals sign, so there is no equation. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Linear-systems/696260: Find the equation of parabola with a vertex at (2,-12) that passes through the point (0,0). Can you please help me out? Thanks in advance.1 solutions Answer 428900 by solver91311(16868) on 2012-12-20 17:38:07 (Show Source): You can put this solution on YOUR website! If the vertex is (2,-12) and it passes through the origin, then symmetry says it must also pass through (4,0). The general form of a parabola function is So, if when , then and if when , then and if when , then Solve the 3X3 linear system to get the coefficients a, b, and c. Use them to write your equation by substituting into: John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Probability-and-statistics/696244: what is the possibility of getting 9 out of 9 questions right on a test? what is the possibility of getting 0 out of 9 questions right on a test?1 solutions Answer 428885 by solver91311(16868) on 2012-12-20 16:37:03 (Show Source): You can put this solution on YOUR website! No way to calculate this from the incomplete information given. You need to provide the probability of getting each individual problem right. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Graphs/696209: m=1/4 and passes through the point ( -2,16) 1 solutions Answer 428881 by solver91311(16868) on 2012-12-20 16:26:56 (Show Source): You can put this solution on YOUR website! Would it be asking too much of you to submit a complete question, describing what it is you need to do, what you don't understand, and what you have tried already? John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Angles/696243: I need to find the complement of angle A which is 81.2 degrees, so how would I go about finding the complement of angle A?1 solutions Answer 428874 by solver91311(16868) on 2012-12-20 15:47:31 (Show Source): You can put this solution on YOUR website! The sum of measure of any angle that is less than 90 degrees and the measure of its complement is 90 degrees. Hence the complement of any angle less than 90 degrees is the difference between 90 degrees and the measure of the given angle. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Geometry_Word_Problems/696240: The length of a rectangle is 4 in. more than its width. If 2 in. are taken from the length and added to the width, the figure becomes a square with an area of 192 in.^2. What are the dimensions of the original figure?1 solutions Answer 428873 by solver91311(16868) on 2012-12-20 15:44:45 (Show Source): You can put this solution on YOUR website! The square root of 192 is , so the original length must have been and the width John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Geometry_Word_Problems/696241: The position of an object moving in a straight line is given by s(t)=2t^2-3t, where s is in meters and t is the time in seconds the object has been in motion. How long will it take the object to move 10 m?1 solutions Answer 428871 by solver91311(16868) on 2012-12-20 15:33:47 (Show Source): You can put this solution on YOUR website! Set and solve for John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Polynomials-and-rational-expressions/696202: "Find the roots of the polynomial equation." 2x^3+2x^2-19x+20 I tried factoring out a 2 but it is uneven. Can I still find the roots and solve the problem even when the x^3 coefficient is two? I need this right now ASAP because I have an Alg. 2 final tomorrow, thanks 1 solutions Answer 428870 by solver91311(16868) on 2012-12-20 15:32:32 (Show Source): You can put this solution on YOUR website! Start with the Rational Roots Theorem. If a polynomial equation with integer coefficients has a rational root, then that root must be of the form where is a factor of the constant term and is a factor of the lead coefficient. Hence your possible rational zeros are: Start testing the possible zeros one at a time using Synthetic Division. Review the process for Synthetic Division here (note: there are 4 pages to review). Once you find one that works, you will have one of your binomial factors, and the quotient of the synthetic division will give you a quadratic trinomial that you can solve with the quadratic formula. Hint: start with -4. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Linear_Equations_And_Systems_Word_Problems/696234: Norah baked two batches of cookies. The first batch of cookies had c chocolate chips. The second batch of cookies had f fewer chocolate chips than the first batch. If there were 24 cookies in the second batch, and each cookie had the same number of chocolate chips, which of the following expressions represents the number of chocolate chips in each cookie of the second batch?1 solutions Answer 428868 by solver91311(16868) on 2012-12-20 15:12:25 (Show Source): You can put this solution on YOUR website! Which of what 'following expressions'? Are you new? John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Systems-of-equations/696233: could show me how to do y/4-3=-41 solutions Answer 428867 by solver91311(16868) on 2012-12-20 15:11:17 (Show Source): You can put this solution on YOUR website! Multiply both sides by 4. Then add 12 to both sides. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Geometry_proofs/696232: ABCD is a rhombus. Explain why triangle ABC is congruent to triangle CDA?1 solutions Answer 428866 by solver91311(16868) on 2012-12-20 15:09:06 (Show Source): You can put this solution on YOUR website! All sides of a rhombus are equal in measure, so AB is congruent to AD and BC is congruent to DC. Then BD is congruent to BD by reflexive equality. Hence ABC is congruent to CDA by SSS. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it  Money_Word_Problems/696218: The band sponsored a car wash. During the first session, the students earned$78. During the afternoon session, they earned $54. That evening when people were on their way home from work, the students earned$81. If the band charged a whole dollar amount for each car, what was the charge per car? 1 solutions Answer 428864 by solver91311(16868)   on 2012-12-20 15:05:55 (Show Source): You can put this solution on YOUR website! There is exactly one whole number that evenly divides 78, 54, and 81. That number is your answer. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Linear-systems/696231: do u have any practice worksheets i can do I'm taking it a year early and my teacher has been absent the past week but we still have a test tomorrow 1 solutions Answer 428863 by solver91311(16868)   on 2012-12-20 15:03:56 (Show Source): You can put this solution on YOUR website!No
 Miscellaneous_Word_Problems/696180: Ran for 7yards then took a loss of 5 yards how many yards will they need to get to first down1 solutions Answer 428862 by solver91311(16868)   on 2012-12-20 15:03:26 (Show Source): You can put this solution on YOUR website! Solve for John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Quadratic_Equations/696225: State the possible number of imaginary zeros of f(x) = 10x^3 - 4x^2 + 2x - 6.1 solutions Answer 428861 by solver91311(16868)   on 2012-12-20 14:56:10 (Show Source): You can put this solution on YOUR website! A polynomial function of degree has exactly zeros counting any multiplicities. Complex zeros of polynomials with real coefficients ALWAYS appear in conjugate pairs. So if is odd, the possible number of complex zeros is . John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 pythagorean/696223: When you solve the pythagorean theorem how can you tell if it is a right triangle or if it is not?1 solutions Answer 428860 by solver91311(16868)   on 2012-12-20 14:52:15 (Show Source): You can put this solution on YOUR website! Square the measure of each of the three sides. You will have one number that is larger than the other two. Add the two smaller numbers. If the sum is equal to the large number, the triangle is right. Otherwise not. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Linear_Equations_And_Systems_Word_Problems/696228: A consumer wants to purchase 1.5 L of antibacterial liquid hand soap. The bottles on the store shelf hold 16 oz, 32 oz, 48 oz, 64 oz. Which bottle comes to closest to containing the desired quantity? 1 solutions Answer 428859 by solver91311(16868)   on 2012-12-20 14:49:43 (Show Source): You can put this solution on YOUR website! A liter is approximately 34 ounces. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Linear-equations/696226: What is the slope-intercept and standard equations for these two points. (-10,4) (-13,5)1 solutions Answer 428858 by solver91311(16868)   on 2012-12-20 14:47:41 (Show Source): You can put this solution on YOUR website! Use the two-point form: where and are the coordinates of the given points. Then arrange the result into the slope intercept form: and the standard form: . Be careful, some text book authors and or professors require that A, B, and C be integers. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 test/696216: A dog weighs 70 N on Earth. If the dog is sent to the moon, how would its weight change? How would its mass change?1 solutions Answer 428857 by solver91311(16868)   on 2012-12-20 14:44:56 (Show Source): You can put this solution on YOUR website! The dog would weigh roughly 70/6 N but its mass would be constant. Please ask your Physics and Astronomy questions on a Physics or Astronomy homework help site. Algebra.com is for math. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Miscellaneous_Word_Problems/696061: The perimeter of a rectangle is 20 inches. The area is 16 square inches. Find the dimensions. Your supposed to solve using a quadratic formula if that helps you at all.1 solutions Answer 428770 by solver91311(16868)   on 2012-12-19 20:23:32 (Show Source): You can put this solution on YOUR website! The perimeter of a rectangle is given by From this we derive The area is the length times the width, so area as a function of width is given by: Which can be written Rearranging to standard form and multiplying through by -1: Using the quadratic formula: where , , and we have: Just plug in your given values for Perimeter and Area and then do the arithmetic. One of the roots will be the length (by convention the larger value) and the other will be the width. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Travel_Word_Problems/696064: I need help solving this problem. "John bought a used car. After he has owned the car for 12weeks he noticed that the cars odometer showed that it had gone a total of 33,245 miles. Its not week 32 and the car has 56,465 miles. How many miles a week has John put on the car? (per average)1 solutions Answer 428763 by solver91311(16868)   on 2012-12-19 19:53:50 (Show Source): You can put this solution on YOUR website! Divide the difference in the mileage by the difference in the number of weeks. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Linear_Equations_And_Systems_Word_Problems/696044: For the line thru (2, -5) and (-1, 4), find x when y= 3 Please help I am very confused1 solutions Answer 428762 by solver91311(16868)   on 2012-12-19 19:52:14 (Show Source): You can put this solution on YOUR website! Use the two-point form: where and are the coordinates of the given points. Once you have the equation, substitute 3 in place of y then do the arithmetic to determine the value of that results. John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Linear-equations/696054: What happens to the graph of the linear function y=2/7x-4 if the slope is changed to 1/2 1 solutions Answer 428760 by solver91311(16868)   on 2012-12-19 19:45:55 (Show Source): You can put this solution on YOUR website! so the graph with the slope is steeper than the graph with the slope . John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it
 Age_Word_Problems/696057: how do you solve Alan, Bill, and Charlie are brothers. Bill is x years old, Alan is 1 year younger, and Charlie is 1 year older in algebra1 solutions Answer 428759 by solver91311(16868)   on 2012-12-19 19:43:20 (Show Source): You can put this solution on YOUR website! Why are you wasting our time asking the same question twice? John Egw to Beta kai to Sigma My calculator said it, I believe it, that settles it