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# Recent problems solved by 'Alan3354'

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 Volume/430325: An Aquarium has a base length of 12 inches and a width of 5 inches. If the Aquarium is 10 inches tall, what is the total volume ?1 solutions Answer 298961 by Alan3354(30968)   on 2011-04-03 08:01:37 (Show Source): You can put this solution on YOUR website!The product is 5*12*10 = 600 cubic in
 logarithm/430453: By using log,solve the following equations.a)5^x=7 b)3^x+2=2^x1 solutions Answer 298960 by Alan3354(30968)   on 2011-04-03 07:58:13 (Show Source): You can put this solution on YOUR website!a)5^x=7 x*log(5) = log(7) x = log(7)/log(5) ----------------- b)3^x+2=2^x I think you mean 3^(x+2) = 2^x (x+2)*log(3) = x*log(2) x*log(3) + log(9) = x*log(2) x(log(3) - log(2)) = -log(9) x = -log(9)/log(1.5) x =~ -5.419
 Travel_Word_Problems/430294: A baseball diamond is actually a square,90 feet on a side. what is the distance from home plate to 2nd base(which is the diagonal of the square)? round to the nearest foot1 solutions Answer 298914 by Alan3354(30968)   on 2011-04-02 23:21:27 (Show Source): You can put this solution on YOUR website!90*sqrt(2) = 127 feet
 Trigonometry-basics/430337: word problem: A double axel is a figure-skating jump in which the skater makes 2.5 revolutions in the air. If a skater is in the air for 0.66s during a double axel, what is her average angular speed to the nearest degree per second? this is how i solved it, is it right? 2.5 revolutions = 900 degrees so 900 divided by .66 equals 1364%1 solutions Answer 298909 by Alan3354(30968)   on 2011-04-02 23:19:36 (Show Source): You can put this solution on YOUR website!A double axel is a figure-skating jump in which the skater makes 2.5 revolutions in the air. If a skater is in the air for 0.66s during a double axel, what is her average angular speed to the nearest degree per second? this is how i solved it, is it right? 2.5 revolutions = 900 degrees so 900 divided by .66 equals 1364% ------------------ 900 deg/0.66 sec = 1364 deg/sec not percent
 logarithm/430344: 5 to the x = 17. State solution to the equation.1 solutions Answer 298875 by Alan3354(30968)   on 2011-04-02 21:05:51 (Show Source): You can put this solution on YOUR website!5 to the x = 17. State solution to the equation. ---------- x =~ 1.099299126 I doubt you want the other 16 solutions.
 Surface-area/430349: If the surface area and volume of a sphere have the same numerical value, find the radius of the sphere. 1 solutions Answer 298874 by Alan3354(30968)   on 2011-04-02 21:03:52 (Show Source):
 Surface-area/430368: If the surface area and volume of a sphere have the same numerical value, find the radius of the sphere. 1 solutions Answer 298873 by Alan3354(30968)   on 2011-04-02 21:02:14 (Show Source): You can put this solution on YOUR website! r = 3
 Graphs/430361: 2y + 5x = -21 solutions Answer 298872 by Alan3354(30968)   on 2011-04-02 21:01:16 (Show Source): You can put this solution on YOUR website!Do you have a question?
 Finance/430366: Can I get a little help please? Find the APY for a nominal rate of 8.5% compounded monthly? (To the nearest hundredth of a percent)1 solutions Answer 298871 by Alan3354(30968)   on 2011-04-02 21:00:43 (Show Source): You can put this solution on YOUR website!(1 + 0.085/12)^12 = 1.08839 --> 8.84%
 Exponents-negative-and-fractional/430356: Can someone confirm if I am doing this problem right? I have to provide the answer in fraction in lowest terms. Question: 2/(x-1) - 4/(x-1) My solution = 2(x-1)/(x-1)(x+1)- 4(x+1)/(x-1)(x+1) = -2x-6/(x+1)(x-1) Thanks1 solutions Answer 298868 by Alan3354(30968)   on 2011-04-02 20:42:31 (Show Source): You can put this solution on YOUR website!2/(x-1) - 4/(x-1) = -2/(x-1) = 2/(1-x) -------------------- My solution = 2(x-1)/(x-1)(x+1)- 4(x+1)/(x-1)(x+1) ------------ = -2x-6/(x+1)(x-1) There's no x+1 in the problem.
 Exponential-and-logarithmic-functions/430364: how do I find the decimal of three places. I have the problem (x+5)^2=4. I cant figure out the three decimal thing. Coukld someone please help me1 solutions Answer 298866 by Alan3354(30968)   on 2011-04-02 20:39:51 (Show Source): You can put this solution on YOUR website!(x+5)^2=4 ---------- x+5 = 2 x = -3 ------- x+5 = -2 x = -7 They're integers, decimals don't apply.
 Quadratic_Equations/430287: How to find the zeros of the function by graphing the function? F(x)= x^2 - 251 solutions Answer 298848 by Alan3354(30968)   on 2011-04-02 18:50:23 (Show Source): You can put this solution on YOUR website!dl the FREE graph s/w at http://www.padowan.dk
 Graphs/430332: Find the equation with the slope 3 y=3x-4 y=-3x+3 y=4x-3 y=-3x-51 solutions Answer 298846 by Alan3354(30968)   on 2011-04-02 18:45:19 (Show Source): You can put this solution on YOUR website!y=3x-4
 logarithm/430279: find log264 1 solutions Answer 298811 by Alan3354(30968)   on 2011-04-02 16:30:00 (Show Source): You can put this solution on YOUR website!log(264) =~ 2.4216 since
 Linear-equations/430271: What is the slope and y-intercept of the line (-4,-10)? How did you figure this out?1 solutions Answer 298810 by Alan3354(30968)   on 2011-04-02 16:27:51 (Show Source): You can put this solution on YOUR website!(-4,-10) is a point, not a line. It has no slope, and no y-intercept.
 Travel_Word_Problems/430211: If I am travelling in a vehicle at 80 kph for 8 seconds what distance have I travelled?1 solutions Answer 298771 by Alan3354(30968)   on 2011-04-02 13:26:46 (Show Source): You can put this solution on YOUR website!1 hour = 3600 seconds 80 km/hr = 80 km/3600 seconds d = 8* 80/3600 km 8/45 km d = 0.1777... km
 Numbers_Word_Problems/430168: How do I translate this sentence into an equation: one third of the differnce of a number and seven is 30? do I begin with division or subtraction? I'm so lost on this one.1 solutions Answer 298742 by Alan3354(30968)   on 2011-04-02 09:44:00 (Show Source): You can put this solution on YOUR website!n = the number The difference can be n-7 or 7-n, a bit loose there. Using n-7 as the difference: (1/3)(n-7) = 30 or (n-7)/3 = 30
 Miscellaneous_Word_Problems/430164: 1 hour 20 minutes + 3 hours 30 minutes1 solutions Answer 298741 by Alan3354(30968)   on 2011-04-02 08:44:49 (Show Source): You can put this solution on YOUR website!Add the hours, and add the minutes
 Graphs/19138: 2x-3y=91 solutions Answer 298740 by Alan3354(30968)   on 2011-04-02 08:43:36 (Show Source): You can put this solution on YOUR website! What do you want to do? You have one equation and 2 unknowns.
 test/430166: I have a question. I am working on consider the following piecewise defined function. Evaluate the given at x = -5. Problem is f(x)= top part is 1/2x+6 if x is less than or equal to -5. Bottom one is -1/4x+7 if x is greater than -5 hope this makes sense! 1 solutions Answer 298739 by Alan3354(30968)   on 2011-04-02 08:40:49 (Show Source): You can put this solution on YOUR website!Evaluate the given at x = -5. Problem is f(x)= top part is 1/2x+6 if x is less than or equal to -5. Bottom one is -1/4x+7 if x is greater than -5 ------------------ Bottom one is -1/4x+7 if x > -5 That doesn't apply at x = -5, only > -5. ---------------- 1/2x+6 if x <= to -5 (1/2)*-5 + 6 = 7/2
 Quadratic_Equations/430134: how do i find A : B = tan A B is 2.667, but i dont know what the next step is. after I find A, im supposed to use it in the equation : a =[ -16 / v^2 (cos A)^2]x^2 + (tan A)x so any help would be appreciated1 solutions Answer 298715 by Alan3354(30968)   on 2011-04-01 22:49:57 (Show Source): You can put this solution on YOUR website! how do i find A : B = tan A B is 2.667, but i dont know what the next step is. ------------- Use a calculator to find A A =~ 69.446 degrees ---------------------- after I find A, im supposed to use it in the equation : a =[ -16 / v^2 (cos A)^2]x^2 + (tan A)x so any help would be appreciated ------------------ a =[ -16 / v^2 (cos A)^2]x^2 + (tan A)x cos(A) =~ 0.351 tan(A) = b = 2.667 Sub for those. I don't know what v and x are.
 Travel_Word_Problems/430129: Person A travels 2400 miles in 4 hours 16 minutes. Person B travels the same distance at a speed 2/3 as fast as Person A. What is the speed of Person B1 solutions Answer 298713 by Alan3354(30968)   on 2011-04-01 22:42:46 (Show Source): You can put this solution on YOUR website!B would travel 2/3 of 2400 miles in 4:16 then. 1600 mi/(4 4/15 hrs) = 1600/(64/15) = 1600*15/64 = 375 mi/hr
 Miscellaneous_Word_Problems/430123: 2 feet 4 inches + 4 feet 8 inches1 solutions Answer 298707 by Alan3354(30968)   on 2011-04-01 22:05:31 (Show Source): You can put this solution on YOUR website!= 6 ft 12 inches = 7 feet
 Graphs/430052: graph the inequality on a plane: 5x - 4 <= 9x + 41 solutions Answer 298665 by Alan3354(30968)   on 2011-04-01 19:53:47 (Show Source): You can put this solution on YOUR website!5x - 4 <= 9x + 4 Simplify it first. 5x <= 9x + 8 0 <= 4x + 8 4x + 8 >= 0 4x >= -8 x >= -2 -------- dl the FREE graph software at http://www.padowan.dk to make the graph
 Word_Problems_With_Coins/430028: how many ways can you put fifty cents into a candy machine , using only nickels and/or dimes?1 solutions Answer 298664 by Alan3354(30968)   on 2011-04-01 19:51:27 (Show Source): You can put this solution on YOUR website!The # of nickels cannot be odd. # of nickels = 0, 2, 4, 6, 8 or 10 The dimes make the difference. 6 ways.
 Rational-functions/430032: Find all solutions to the equation: Tan θ + 1 = 0 write your answer in radians in terms of PIE.1 solutions Answer 298663 by Alan3354(30968)   on 2011-04-01 19:48:00 (Show Source): You can put this solution on YOUR website!tan(t) + 1 = 0 tan(t) = -1 t = 3pi/4, 7pi/4 in the first cycle ------------------ It's pi, the Greek letter, not pie, the dessert. ----------- A more complete answer is theta = 3pi/4 + n*pi, n = 0,1,2,3,...
 test/430075: can you please tell me if i did these right?? *Solve 7x – 2 ≤ 3(3x + 2) is the solution x≤-2? *Solve –9(x – 2) < –72. is the solution x>10? thanks! 1 solutions Answer 298661 by Alan3354(30968)   on 2011-04-01 19:44:24 (Show Source): You can put this solution on YOUR website!*Solve 7x – 2 ≤ 3(3x + 2) 7x - 2 <= 9x + 6 7x < = 9x + 8 0 < = 2x + 8 2x + 8 >=0 2x >= -8 x >= -4 ------------------- is the solution x≤-2? Doesn't appear to be. ----------------------- *Solve –9(x – 2) < –72. -9x + 18 < -72 -9x < -90 -x < -10 x > 10
 Evaluation_Word_Problems/429997: Is (x-3) a factor of p(x)=x^4-5x^2-27x+15? 1 solutions Answer 298608 by Alan3354(30968)   on 2011-04-01 14:06:52 (Show Source): You can put this solution on YOUR website!No. If you sub 3 for x, p(3) <> 0
 Travel_Word_Problems/429990: Aircraft speed is calculate in nautical Miles per hour or knots. Two aircraft are flying in same direction. Aircraft A is flying at 210 miles per hour and Aircraft B at 330 Knots. At 1000hrs both aircraft are 75 nautical miles. At what time will a distance of 12 nautical miles exits between the two aircraft?1 solutions Answer 298602 by Alan3354(30968)   on 2011-04-01 13:56:38 (Show Source): You can put this solution on YOUR website! Aircraft speed is calculate in nautical Miles per hour or knots. Two aircraft are flying in same direction. Aircraft A is flying at 210 miles per hour and Aircraft B at 330 Knots. At 1000hrs both aircraft are 75 nautical miles. At what time will a distance of 12 nautical miles exits between the two aircraft? ------------------------ 1 mph = 1 statute mile/hour = 5280 ft/hour 1 knot = 1 nautical mile/hour = 6080 ft/hour They are not the same thing. 1 knot =~ 1.15 mph ------------------- "At 1000hrs both aircraft are 75 nautical miles." What does that mean? ------------------- Whoever wrote this problem needs to learn some things, and try again.

1 solutions

Answer 298593 by Alan3354(30968)   on 2011-04-01 12:52:45 (Show Source):
You can put this solution on YOUR website!
(x-1)(x+1)(x)=120

x = 5

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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 -71 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 -71 is + or - . The solution is , or Here's your graph: