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# Recent problems solved by 'Alan3354'

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 Expressions-with-variables/632756: how to solve -16x^-51 solutions Answer 398454 by Alan3354(31518)   on 2012-07-28 20:32:38 (Show Source): You can put this solution on YOUR website!how to solve -16x^-5 ----------- It's not an equation, nothing to solve.
 Miscellaneous_Word_Problems/632746: `Problem: One day I was at school,the electricity went out at home. when I left for swim practice that morning,all the clocks were working and the time was 6:30am.When I returned home they all said different times. the wind -up clock,which was unaffected by the loss of electricity,have a time of 5:21pm. my math clock, which stops when the electricity is off and runs when the electricity is on, gave a time of 3:50 pm. My digital clock, which resets to midnight when the power goes off and continues to run from that point,have a flashing time of 6:03 am. Assuming the electricity went out only once, what time did it go out and for how long? ~ also can you show all of your work thank you soo much1 solutions Answer 398453 by Alan3354(31518)   on 2012-07-28 20:31:34 (Show Source): You can put this solution on YOUR website!dup
 Miscellaneous_Word_Problems/632744: Problem: One day I was at school,the electricity went out at home. when I left for swim practice that morning,all the clocks were working and the time was 6:30am.When I returned home they all said different times. the wind -up clock,which was unaffected by the loss of electricity,have a time of 5:21pm. my math clock, which stops when the electricity is off and runs when the electricity is on, gave a time of 3:50 pm. My digital clock, which resets to midnight when the power goes off and continues to run from that point,have a flashing time of 6:03 am. Assuming the electricity went out only once, what time did it go out and for how long? ~ also can you show all of your work thank you soo much!1 solutions Answer 398452 by Alan3354(31518)   on 2012-07-28 20:31:14 (Show Source): You can put this solution on YOUR website!dup
 Miscellaneous_Word_Problems/632747: `Problem: One day I was at school,the electricity went out at home. when I left for swim practice that morning,all the clocks were working and the time was 6:30am.When I returned home they all said different times. the wind -up clock,which was unaffected by the loss of electricity,have a time of 5:21pm. my math clock, which stops when the electricity is off and runs when the electricity is on, gave a time of 3:50 pm. My digital clock, which resets to midnight when the power goes off and continues to run from that point,have a flashing time of 6:03 am. Assuming the electricity went out only once, what time did it go out and for how long? ~ also can you show all of your work thank you soo muchh1 solutions Answer 398451 by Alan3354(31518)   on 2012-07-28 20:30:49 (Show Source): You can put this solution on YOUR website!One day I was at school,the electricity went out at home. when I left for swim practice that morning,all the clocks were working and the time was 6:30am.When I returned home they all said different times. the wind -up clock,which was unaffected by the loss of electricity,have a time of 5:21pm. my math clock, which stops when the electricity is off and runs when the electricity is on, gave a time of 3:50 pm. My digital clock, which resets to midnight when the power goes off and continues to run from that point,have a flashing time of 6:03 am. Assuming the electricity went out only once, what time did it go out and for how long? ------------------------------ the wind -up clock,which was unaffected by the loss of electricity,have a time of 5:21pm. my math clock, which stops when the electricity is off and runs when the electricity is on, gave a time of 3:50 pm. ---- The difference from 350 to 521 = 1hr 31 minutes, the time the power was off. --------- My digital clock, which resets to midnight when the power goes off and continues to run from that point,have a flashing time of 6:03 am. Assuming the electricity went out only once, what time did it go out ---- The digital clock ran for 6hr 3 minutes since power was restored. ---- 1721 - 603 = 1118, the time the power was restored. 1118 - 131 = 0947, the time the power went off
 Graphs/632724: I'm suppose to solve the system of equation by using the addition method: x-y =-9 x+3 = 15 I know the answer is (-3,6) but I dont know HOW they got the answer.1 solutions Answer 398437 by Alan3354(31518)   on 2012-07-28 17:27:27 (Show Source): You can put this solution on YOUR website!x-y =-9 x+3 = 15 ==================== I think you mean x- y =-9 x+3y = 15 -------------- Subtract -4y = -24 y = 6 ------ Sub for y in either eqn, find x
 Square-cubic-other-roots/632674: cube root of 9.81 solutions Answer 398428 by Alan3354(31518)   on 2012-07-28 16:04:48 (Show Source): You can put this solution on YOUR website!cube root of 9.8 ---------------- Use a calculator.
 Quadratic_Equations/632712: Without solving the equation (or factoring) determine the solution to the equation x^-6x=0 by using only the graph. Can you help me? Thanks Does it have a maximum or minimum What are the coordinates of the vertex in (x,y) form What is the equation of the axis of symmetry for this parabola1 solutions Answer 398426 by Alan3354(31518)   on 2012-07-28 16:01:18 (Show Source): You can put this solution on YOUR website!x^-6x=0 -------------- Is the exponent -6x ?
 Polygons/632623: four exterior angles of a polygon are 80 degrees each. if the remaining angles are 20 degrees, how many sides has the polygon?1 solutions Answer 398406 by Alan3354(31518)   on 2012-07-28 13:35:47 (Show Source): You can put this solution on YOUR website!four exterior angles of a polygon are 80 degrees each. if the remaining angles are 20 degrees, how many sides has the polygon? ----------------- Hint: The total is always 360 degs 4*80 = 320
 test/632624: How to solve k=m/v equations1 solutions Answer 398405 by Alan3354(31518)   on 2012-07-28 13:32:58 (Show Source): You can put this solution on YOUR website!How to solve k=m/v equations ------------------ The same as any equation.
 Pythagorean-theorem/632678: Given a right triangle, use the Pythagorean theorem to find "a" (one of the legs) when c = 40 and b = 20. Use a calculator and round your answer to the nearest tenth1 solutions Answer 398404 by Alan3354(31518)   on 2012-07-28 13:30:08 (Show Source): You can put this solution on YOUR website!Given a right triangle, use the Pythagorean theorem to find "a" (one of the legs) when c = 40 and b = 20. Use a calculator and round your answer to the nearest tenth --------------------
 Length-and-distance/632581: CD is a water pipeline. A(2,3) and B(5,4) are two towns. A pumping station is to be located on the pipeline to pump water to A and B. Each town is to pay for their own service pipes and insist on equality of costs. What is the total length of the service pipe required?1 solutions Answer 398370 by Alan3354(31518)   on 2012-07-28 09:37:52 (Show Source): You can put this solution on YOUR website!A(2,3) and B(5,4) are two towns --------- d =~ 3.162 units ============= No cost info is given
 Exponents/632595: (-6.2) to the 9th power times (-6.2) to the 12th power. How do you solve this equation?1 solutions Answer 398369 by Alan3354(31518)   on 2012-07-28 09:34:30 (Show Source): You can put this solution on YOUR website!(-6.2) to the 9th power times (-6.2) to the 12th power. How do you solve this equation? ============= There's no equal sign, so it's not an equation. --> nothing to solve for.
 Trigonometry-basics/632576: what are the roots of x when cot(x)-square root 3/3 1 solutions Answer 398366 by Alan3354(31518)   on 2012-07-28 08:21:34 (Show Source): You can put this solution on YOUR website!what are the roots of x when cot(x)-square root 3/3 ----------- What?
 Exponents/632594: x to the 5th power times x to the 12th power. How do you solve this eqation?1 solutions Answer 398365 by Alan3354(31518)   on 2012-07-28 08:20:25 (Show Source): You can put this solution on YOUR website!x to the 5th power times x to the 12th power. How do you solve this eqation? =============== It's not an equation, there's no equal sign. --> nothing to be solved. ------- =
 Graphs/632499: -3x+y=-3 x-y=31 solutions Answer 398333 by Alan3354(31518)   on 2012-07-27 20:06:27 (Show Source): You can put this solution on YOUR website!-3x+ y=-3 +x - y =3 ------------ Add
 Equations/632498: Write an equation for a line that is parallel to the x-axis. What would be the y-intercept and x-intercept for the line of the equation above?1 solutions Answer 398332 by Alan3354(31518)   on 2012-07-27 19:26:58 (Show Source): You can put this solution on YOUR website!Write an equation for a line that is parallel to the x-axis. ------------ y = k, k = any number --------------- What would be the y-intercept and x-intercept for the line of the equation above? The y-int is (0,k). There is no x-int, it's parallel to the x-axis. Parallel lines don't intersect.
 Equations/632496: A Japanese bullet train leaves the station traveling west at 164 mph. A pigeon which was resting on the train is startled, and starts flying east at 40 mph. After two hours, how far about are the pigeon and the train? Draw a table and a diagram. 1 solutions Answer 398329 by Alan3354(31518)   on 2012-07-27 19:08:14 (Show Source): You can put this solution on YOUR website!A Japanese bullet train leaves the station traveling west at 164 mph. A pigeon which was resting on the train is startled, and starts flying east at 40 mph. After two hours, how far about are the pigeon and the train? -------------- If they continue to move in the given directions, the speeds are added. 164 + 40 = 204 mi/hr 2 hr * 204 mi/hr = 408 miles -------------------------- Draw a table and a diagram. I drew a chair, I was not in the mood to draw a table.
 Equations/632497: Write an equation to describe the relation shown in the table. x -2 -1 0 1 4 _______________ y 8 4 0 -4 -16 1 solutions Answer 398328 by Alan3354(31518)   on 2012-07-27 19:01:32 (Show Source): You can put this solution on YOUR website!Write an equation to describe the relation shown in the table. x -2 -1 0 1 4 _______________ y 8 4 0 -4 -16 ====================== There are an infinite # of them, but the simplest one I see is y = -4x
 Circles/632487: There are two cones. one smaller than the other. Small cone is 13.5m by 30m. large cone is 22.5m by 50m. What is the ratio between the volume of the smaller cone and the volume of the larger cone, expressed as a decimal?1 solutions Answer 398327 by Alan3354(31518)   on 2012-07-27 18:51:37 (Show Source): You can put this solution on YOUR website!There are two cones. one smaller than the other. Small cone is 13.5m by 30m. large cone is 22.5m by 50m. What is the ratio between the volume of the smaller cone and the volume of the larger cone, expressed as a decimal? ------------- r is 2nd power, h is 1st Volume is a function of r squared, and of h =============== R = radius of larger cone, r is smaller H = ... etc ------ = = = 125/27 Small to large = 27/125 = 0.216:1
 logarithm/632486: Form a polynomial f(x) with real coefficients having the given degree and zeros. Expand into standard form Degree 3: zeros: 1 + i and -8 1 solutions Answer 398324 by Alan3354(31518)   on 2012-07-27 18:43:00 (Show Source): You can put this solution on YOUR website!Form a polynomial f(x) with real coefficients having the given degree and zeros. Expand into standard form Degree 3: zeros: 1 + i and -8 ---------- Complex zeroes occur in conjugate pairs, so a zero is 1 - i ------------ (x - 1 - i)*(x - 1 + i) = x^2 - x + ix - x + 1 - i - ix + i + 1 x^2 - 2x + 2 -------------- --> (x+8)*(x^2 - 2x + 2) = 0 You can multiply that one.
 Geometry_Word_Problems/632494: Find the area of figure 20ft., 20ft., 45ft., and 10 ft.?1 solutions Answer 398321 by Alan3354(31518)   on 2012-07-27 18:36:42 (Show Source): You can put this solution on YOUR website!Find the area of figure 20ft., 20ft., 45ft., and 10 ft.? -------------- It's possible to make more than 1 polygon with those side lengths.
 Circles/632484: A cubic foot of water weighs 62.4 lb. A basketball has a radius of 0.39 ft. How much would the basketball weigh if it was filled with water (to the nearest tenth)?1 solutions Answer 398316 by Alan3354(31518)   on 2012-07-27 18:21:15 (Show Source): You can put this solution on YOUR website!A cubic foot of water weighs 62.4 lb. A basketball has a radius of 0.39 ft. How much would the basketball weigh if it was filled with water (to the nearest tenth)? ---------- cu ft Weight = 62.4*Vol pounds
 Square-cubic-other-roots/632455: W=SQRT 1 LC' FOR L Thanks in Advance,,,1 solutions Answer 398315 by Alan3354(31518)   on 2012-07-27 18:18:57 (Show Source): You can put this solution on YOUR website!W=SQRT 1 LC' FOR L Thanks in Advance,,, ----------------------- It's not clear what you mean.
 test/632417: Solve the system of equations by the Gaussian elimination method. (If the system is dependent, enter a general solution in terms of c1, c2, ... . If there is no solution, enter NO SOLUTION.) 2x + y − 3z = 4 3x + 2y + z = 21 solutions Answer 398312 by Alan3354(31518)   on 2012-07-27 18:07:38 (Show Source): You can put this solution on YOUR website!Solve the system of equations by the Gaussian elimination method. (If the system is dependent, enter a general solution in terms of c1, c2, ... . If there is no solution, enter NO SOLUTION.) ----------- You have 2 eqns and 3 variables. --> an infinite # of solutions. ---------- If there is no solution, enter NO SOLUTION. Well, DUH. What else would we enter? We don't need to be told that. It's condescending, and can be a reason that your problem is ignored.
 Money_Word_Problems/632440: What is the formula for the total revenue of year 2006. Quarter 1 5,469,123 Quarter2 5,489,564.00 Quarter 3 5,579,648 Quarter 4 5,789,459.00 1 solutions Answer 398310 by Alan3354(31518)   on 2012-07-27 17:55:20 (Show Source): You can put this solution on YOUR website!What is the formula for the total revenue of year 2006. Quarter 1 5,469,123 Quarter2 5,489,564.00 Quarter 3 5,579,648 Quarter 4 5,789,459.00 ------------------------ I think you add the 4 quarters.
 Circles/632458: A game Ginger invented is played on a semicircular field, as shown. The perimeter of the field needs to be enclosed with 8' netting . The netting costs \$20 per linear meter. What is the approximate cost of the netting used to enclose the playing field? The straight portion of the semi circle is 60 meters1 solutions Answer 398309 by Alan3354(31518)   on 2012-07-27 17:54:00 (Show Source): You can put this solution on YOUR website!A game Ginger invented is played on a semicircular field, as shown. The perimeter of the field needs to be enclosed with 8' netting . The netting costs \$20 per linear meter. What is the approximate cost of the netting used to enclose the playing field? The straight portion of the semi circle is 60 meters =================== If the "straight portion" is the diameter, then the circumference of the semicircle is pi*d/2 = 30pi meters. The total = 60 + 30*pi meters The cost = \$30*(60 + 30*pi)
 Linear-equations/632395: Jesse rents a moving van for \$75 and must pay \$2 per mile. The following week, Alex rents the same van, is charged \$80 for the rental and \$1.50 per mile. If they each paid the same amount and drove the same number of miles, how far did they each travel? please show how the problem is set up, the work to solve the problem, along with the solution.1 solutions Answer 398306 by Alan3354(31518)   on 2012-07-27 17:48:05 (Show Source): You can put this solution on YOUR website!Jesse rents a moving van for \$75 and must pay \$2 per mile. The following week, Alex rents the same van, is charged \$80 for the rental and \$1.50 per mile. If they each paid the same amount and drove the same number of miles, how far did they each travel? ================= 75 + 2m = 80 + 1.5m Solve for m
 Linear-systems/632474: Solve the system of equations and give the value of x. 5x + 2y = 18 2x + 2y = 301 solutions Answer 398300 by Alan3354(31518)   on 2012-07-27 17:34:56 (Show Source): You can put this solution on YOUR website!5x + 2y = 18 2x + 2y = 30 ------------ Subtract
 Functions/632462: Determine the intervals on which the function is decreasing constant on what interval is the function decreasing ? link to question: http://oi47.tinypic.com/v7v9zm.jpg i need to know the other 2 steps on what interval is the function decreasing and on what interveral is the function constant image link to question here 2nd part http://oi48.tinypic.com/s6ucjl.jpg1 solutions Answer 398290 by Alan3354(31518)   on 2012-07-27 16:25:47 (Show Source): You can put this solution on YOUR website!Determine the intervals on which the function is decreasing constant on what interval is the function decreasing ? link to question: http://oi47.tinypic.com/v7v9zm.jpg ----------------------------------- It's increasing from (-4,-6) to (1,4) and from (5,0) to (8,8) --------- It's decreasing from (2,3) to (5,0) ======================================= i need to know the other 2 steps on what interval is the function decreasing and on what interveral is the function constant image link to question here 2nd part http://oi48.tinypic.com/s6ucjl.jpg ------------- The 2nd link didn't work.
 Polynomials-and-rational-expressions/632451: The height of a soccer ball after being kicked is given by the function h(t)=-16t^2+48t. How many seconds after being kicked will the ball hit the ground? Thank you so much.1 solutions Answer 398288 by Alan3354(31518)   on 2012-07-27 16:17:43 (Show Source): You can put this solution on YOUR website!The height of a soccer ball after being kicked is given by the function h(t)=-16t^2+48t. How many seconds after being kicked will the ball hit the ground? --------------- It's at ground level when h(t) = 0 -16t^2 + 48t = 0 Solve for t ----------- There are 2 times, t = 0 at launch, and at impact.
 Radicals/632449: g(x)=x^2+3x+81 solutions Answer 398286 by Alan3354(31518)   on 2012-07-27 16:15:12 (Show Source): You can put this solution on YOUR website!g(x)=x^2+3x+8 --------------- Do you have a question?