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# Recent problems solved by 'Alan3354'

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 Travel_Word_Problems/716845: Find the area of a rectangle movie screen that is 50 feet long and 40 feet high.1 solutions Answer 440007 by Alan3354(30993)   on 2013-02-20 18:14:04 (Show Source): You can put this solution on YOUR website!Find the area of a rectangle movie screen that is 50 feet long and 40 feet high. ------------ Area = length * width
 Travel_Word_Problems/716783: A plane leaves an airport and travels 16 miles N 25 E and turns 90 degrees clockwise and travels S 33 E. From this point, a)what is the distance of the plane to the airport? b)what bearing does the pilot need to use to get back to the airport?1 solutions Answer 439976 by Alan3354(30993)   on 2013-02-20 16:26:41 (Show Source): You can put this solution on YOUR website!A plane leaves an airport and travels 16 miles N 25 E and turns 90 degrees clockwise and travels S 33 E. ------------- He can't turn 90 degs CW and be headed S 33 E. 025 + 090 = 115 heading. S 33 E = 147 heading
 Miscellaneous_Word_Problems/716722: I have a recipe that gives ingredient proportions for an 8" round cake. I need to know what they would be for an 24 x 30 square. same thickness.1 solutions Answer 439962 by Alan3354(30993)   on 2013-02-20 14:36:57 (Show Source): You can put this solution on YOUR website!I have a recipe that gives ingredient proportions for an 8" round cake. I need to know what they would be for an 24 x 30 square. same thickness. ---------------- If 8" is the diameter, it's 14.3 times as much of everything. =~ 14.3
 Linear-equations/716710: Graph y=-2/3x+1. Be sure to indicate at least 2 points on the graph.1 solutions Answer 439960 by Alan3354(30993)   on 2013-02-20 14:30:27 (Show Source): You can put this solution on YOUR website!Graph y=-2/3x+1 ----- Pick 2 values for x and find y. Plot the 2 points. Draw a line thru them.
 Trigonometry-basics/716687: f(x)=2sin(1/2x+5pi/6) Find five points on the graph1 solutions Answer 439938 by Alan3354(30993)   on 2013-02-20 12:20:12 (Show Source): You can put this solution on YOUR website!f(x)=2sin(1/2x+5pi/6) Find five points on the graph ------------------------- Pick 5 values of x and find f(x) You can use Excel ------------------- dl the Free graph software at http://www.padowan.dk ------- Use Insert Enter 2sin(x/2 + 5pi/6), not 1/2x Set the x-axis to radians and show as units of pi.
 Travel_Word_Problems/716627: A rock is thrown upward from the edge of a cliff. The rock follows the equation below: S=24+64t-16t^2 What is the greatest height above the ground that this rock will go? 1 solutions Answer 439937 by Alan3354(30993)   on 2013-02-20 11:16:02 (Show Source): You can put this solution on YOUR website!A rock is thrown upward from the edge of a cliff. The rock follows the equation below: S=24+64t-16t^2 What is the greatest height above the ground that this rock will go? --------------- Max height is at the vertex of the parabola. Vertex is on the AOS, Axis of Symmetry, t = -b/2a = -64/-32 @ t = 2, S = 24 + 128 - 64 S = 88 ft
 test/716588: 3x²-9x+31 solutions Answer 439916 by Alan3354(30993)   on 2013-02-20 08:24:00 (Show Source): You can put this solution on YOUR website!3x²-9x+3 ------------- Do you have a question.
 Travel_Word_Problems/716421: A six-passenger airplane has a gas tank that holds 240 gallons. When flying at maximum speed, the plane averages 6 1/4 miles per gallon. How far can the plane fly at maximum speed? 1 solutions Answer 439863 by Alan3354(30993)   on 2013-02-19 20:13:26 (Show Source): You can put this solution on YOUR website!A six-passenger airplane has a gas tank that holds 240 gallons. When flying at maximum speed, the plane averages 6 1/4 miles per gallon. How far can the plane fly at maximum speed? --------------------- 240 gallons * 6.25 mi/gallon = 1500 miles
 Equations/716403: -x^2+y=91 solutions Answer 439861 by Alan3354(30993)   on 2013-02-19 20:10:50 (Show Source): You can put this solution on YOUR website!-x^2+y=9 ---------- Do you have a question?
 test/716419: 21,22,23,24,25,26,27,28,29,30 31,32,33,34,35,36,37,38,39,40 The shaded numbers are . Less than 20. Even. Greater than 40. Odd.1 solutions Answer 439860 by Alan3354(30993)   on 2013-02-19 20:06:59 (Show Source): You can put this solution on YOUR website!21,22,23,24,25,26,27,28,29,30 31,32,33,34,35,36,37,38,39,40 The shaded numbers are . Less than 20. Even. Greater than 40. Odd. ---------- No numbers are shaded.
 Polynomials-and-rational-expressions/716384: x³ - 2x² + 10x + 136 = 0 1 solutions Answer 439851 by Alan3354(30993)   on 2013-02-19 19:15:17 (Show Source): You can put this solution on YOUR website!x³ - 2x² + 10x + 136 = 0 ------------ Do you have a question?
 Numbers_Word_Problems/716382: solve the equation and find these integers (127,128,129)=384 1 solutions Answer 439850 by Alan3354(30993)   on 2013-02-19 19:14:38 (Show Source): You can put this solution on YOUR website!solve the equation and find these integers (127,128,129)=384 The equation is solved. --------- I found the integers. They are 127, 128, 129 & 384 ----------- What did I win?
Polynomials-and-rational-expressions/716376: find the zeros of g(x)=x^2-x+5 by using the quadratic formula

1 solutions

Answer 439847 by Alan3354(30993)   on 2013-02-19 19:08:28 (Show Source):
You can put this solution on YOUR website!
find the zeros of g(x)=x^2-x+5 by using the quadratic formula
--------------
Why don't you do that?
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 Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc) Quadratic equation (in our case ) has the following solutons: For these solutions to exist, the discriminant should not be a negative number. First, we need to compute the discriminant : . The discriminant -19 is less than zero. That means that there are no solutions among real numbers. If you are a student of advanced school algebra and are aware about imaginary numbers, read on. In the field of imaginary numbers, the square root of -19 is + or - . The solution is , or Here's your graph:

 pythagorean/716354: A chessboard has diagonals of length 40 cm. What is the length of each side of the chess board, to the nearest tenth of a cm?1 solutions Answer 439846 by Alan3354(30993)   on 2013-02-19 19:04:20 (Show Source): You can put this solution on YOUR website!A chessboard has diagonals of length 40 cm. What is the length of each side of the chess board, to the nearest tenth of a cm? --------- It's a square. The sides are s cm.
 Polynomials-and-rational-expressions/716369: Completely factor the polynomial 4x^3+12x^2+4x+12 The answer I have is (2x-3)(2x^2+3) I grouped the problem first and then i factored out the GCF from both groups. I followed directions I wrote down from a similar problem so i am unsure if the same rules apply to this question Thank You!1 solutions Answer 439845 by Alan3354(30993)   on 2013-02-19 19:02:06 (Show Source): You can put this solution on YOUR website!Completely factor the polynomial 4x^3+12x^2+4x+12 The answer I have is (2x-3)(2x^2+3) I grouped the problem first and then i factored out the GCF from both groups. I followed directions I wrote down from a similar problem so i am unsure if the same rules apply to this question ------------------- Multiply your answer, see if it works. Doesn't match.
 Volume/716375: how much sugar will fit in a container 4 inches wide 6 inches height and 10 inches deep1 solutions Answer 439844 by Alan3354(30993)   on 2013-02-19 18:59:04 (Show Source): You can put this solution on YOUR website!how much sugar will fit in a container 4 inches wide 6 inches height and 10 inches deep -------- Volume = L*W*H It's the product of the 3 dimensions
 Travel_Word_Problems/716374: while on vaaction i noticed i was driving 50km/hr. what is my speed in miles/hr1 solutions Answer 439843 by Alan3354(30993)   on 2013-02-19 18:58:03 (Show Source): You can put this solution on YOUR website!while on vaaction i noticed i was driving 50km/hr. what is my speed in miles/hr ------------- 1 inch = 2.54 cm exactly Figure it out from that.
 Polygons/716363: what is the number of sides of a regular polygon whose interior angles measure 135 degrees?1 solutions Answer 439840 by Alan3354(30993)   on 2013-02-19 18:46:19 (Show Source): You can put this solution on YOUR website!what is the number of sides of a regular polygon whose interior angles measure 135 degrees? -------- Ext angles = 180 - 135 = 45 n = 360/45 = 8 sides
 Exponents/716344: Find the value of n2 when n is 90 1 solutions Answer 439837 by Alan3354(30993)   on 2013-02-19 18:32:26 (Show Source): You can put this solution on YOUR website!Find the value of n2 when n is 90 ---------- n*2 = 180
 test/716353: How Do You Simply Figure Out Proofs For Congruent Triangles Or Just Proofs By Itself ?1 solutions Answer 439836 by Alan3354(30993)   on 2013-02-19 18:31:28 (Show Source): You can put this solution on YOUR website!How Do You Simply Figure Out Proofs For Congruent Triangles Or Just Proofs By Itself ? ---------- I do them very well, thx for asking.
 Linear-equations/716357: i have this worksheet about rise/run and i need to know the rise from 1 to 4.51 solutions Answer 439835 by Alan3354(30993)   on 2013-02-19 18:30:39 (Show Source): You can put this solution on YOUR website!i have this worksheet about rise/run and i need to know the rise from 1 to 4.5 ------------ Is 1 to 4.5 parallel to the x-axis? the y-axis?
 Polynomials-and-rational-expressions/716361: 10xy - 9y - yx + 2y=1 solutions Answer 439834 by Alan3354(30993)   on 2013-02-19 18:29:13 (Show Source): You can put this solution on YOUR website!10xy - 9y - yx + 2y= ---------- Do you have a question?
 Trigonometry-basics/716275: how do i prove that cotx / cscx - 1 = cscx + 1 / cotx 1 solutions Answer 439810 by Alan3354(30993)   on 2013-02-19 16:33:05 (Show Source): You can put this solution on YOUR website!how do i prove that cotx / cscx - 1 = cscx + 1 / cotx ----------- Is it cotx / (cscx - 1) = (cscx + 1) / cotx ? -------------- Cross multiply cot^2 = csc^2 - 1 Multiply thru by sin^2 cos^2 = 1 - sin^2 I'm convinced.
 Linear-equations/716283: How do you solve and graph x-2y=4?1 solutions Answer 439807 by Alan3354(30993)   on 2013-02-19 16:13:21 (Show Source): You can put this solution on YOUR website!How do you solve and graph x-2y=4? ---------------- Solve for what? ============ It's a straight line, so you need 2 points. Pick 2 values for x and find y (or vice versa). Plot the 2 points. Draw a line thru them.
 Numbers_Word_Problems/716278: if n+6 represent a positiveodd integer, the next larger postive odd integer is represented by? 1 solutions Answer 439801 by Alan3354(30993)   on 2013-02-19 16:04:20 (Show Source): You can put this solution on YOUR website!n+8
 Numbers_Word_Problems/716042: Find the three consecutive even integers where the product of the first two is 481 solutions Answer 439799 by Alan3354(30993)   on 2013-02-19 16:02:42 (Show Source): You can put this solution on YOUR website!Find the three consecutive even integers where the product of the first two is 48 ---------------- 6, 8, 10 -8, -6, -4
 Travel_Word_Problems/716243: Velocity and acceleration. Pls help me solve, a vehicle travelling at 90km/hr accelerates at 1.8m/s, calculate the distance it travels before it stops1 solutions Answer 439791 by Alan3354(30993)   on 2013-02-19 15:50:24 (Show Source): You can put this solution on YOUR website!a vehicle travelling at 90km/hr accelerates at 1.8m/s, calculate the distance it travels before it stops --------------- acc must be negative, or it won't stop. Also, acc = 1.8 m/sec/sec, not m/sec -------------- v = 90 km/hr = 90000 m/3600 sec = 25 m/sec -------- time to stop = 25/1.8 = 125/9 seconds The average speed is 1/2 of 25 m/sec (25 m/sec at t = 0, 0 m/sec when stopped) distance = vt/2 = 25*(125/(9*2)) = 173.6111... meters
 test/716256: (5,9);y=2x-1 Determine whether each ordered pair is the solution of the given equation.1 solutions Answer 439788 by Alan3354(30993)   on 2013-02-19 15:39:02 (Show Source): You can put this solution on YOUR website!(5,9);y=2x-1 Determine whether each ordered pair is the solution of the given equation. -------------- Sub 5 for x and 9 for y and see if the 2 sides are equal.
 Numeric_Fractions/716202: 48/112 in its lowest terms.1 solutions Answer 439774 by Alan3354(30993)   on 2013-02-19 14:12:42 (Show Source): You can put this solution on YOUR website!48/112 in its lowest terms ------------- Divide the NUM and the DEN by 2 (at the same time) until at least one of them is an odd number.
 Travel_Word_Problems/716189: Jenny can swim 3 miles in 90 minutes. She can swim 2 miles in 60 minutes. How long does it take her to swim 1 mile?1 solutions Answer 439773 by Alan3354(30993)   on 2013-02-19 14:09:54 (Show Source): You can put this solution on YOUR website!Jenny can swim 3 miles in 90 minutes. She can swim 2 miles in 60 minutes. How long does it take her to swim 1 mile? --------------- 3/90 = 1/30 --> 30 minutes
 Square-cubic-other-roots/716208: 7^3/4 rewrite using radical notation1 solutions Answer 439772 by Alan3354(30993)   on 2013-02-19 14:05:09 (Show Source): You can put this solution on YOUR website!7^3/4 rewrite using radical notation ----------- = =