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# Recent problems solved by 'Alan3354'

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 Functions/714882: What is the sum of 1,605 + 1,219 + 1,119 + 1,153? 1 solutions Answer 439041 by Alan3354(30993)   on 2013-02-15 15:46:36 (Show Source): You can put this solution on YOUR website!What is the sum of 1,605 + 1,219 + 1,119 + 1,153? ----------------- Wny not add them and find out?
 test/714844: a boy is three years older than his sister.the sum of their square ages is 369.how old are they1 solutions Answer 439034 by Alan3354(30993)   on 2013-02-15 15:36:47 (Show Source): You can put this solution on YOUR website!a boy is three years older than his sister.the sum of their square ages is 369.how old are they ----------------- (x - 15)*(x + 18) = 0 x = 15 --> 15 & 18 --------------- Ignore the negative solution.
 Coordinate-system/714920: if a circle is centered at the midpoint of (3,-2) and (5,11). Find the equation of that circle. Show work.1 solutions Answer 439030 by Alan3354(30993)   on 2013-02-15 15:32:50 (Show Source): You can put this solution on YOUR website!if a circle is centered at the midpoint of (3,-2) and (5,11). Find the equation of that circle. Show work. ----------------- To find the midpoint, get the average of x & y separately x: (3+5)/2 = 4 y: (-2+11)/2 = 4.5 -------------------- The center is (4,4.5) You didn't give the radius. ------------
 Angles/714869: What is the measure of an angle if the equation is 5x+32=7x+8 ? 1 solutions Answer 439029 by Alan3354(30993)   on 2013-02-15 15:24:51 (Show Source): You can put this solution on YOUR website!What is the measure of an angle if the equation is 5x+32=7x+8 ? -------------- What angle?
 Geometry_Word_Problems/714910: the question is.. An irrigation system waters a circular field that has a 60-foot radius. Find the exact area watered by the irrigation system. i was using the formula Pi*r^2 thank you for your help1 solutions Answer 439027 by Alan3354(30993)   on 2013-02-15 15:16:46 (Show Source): You can put this solution on YOUR website!the question is.. An irrigation system waters a circular field that has a 60-foot radius. Find the exact area watered by the irrigation system. i was using the formula Pi*r^2 ------------- What did you get? Area = pi*r^2 in sq feet.
 Word_Problems_With_Coins/714783: 1- a metalic pipe is .7cm thick inner radius of the pipe is 3.5cm and length is 5dm find its total surface area 1 solutions Answer 439000 by Alan3354(30993)   on 2013-02-15 09:24:21 (Show Source): You can put this solution on YOUR website! 1- a metalic pipe is .7cm thick inner radius of the pipe is 3.5cm and length is 5dm find its total surface area ------------ The length is 50 cm The inner radius is 3.5 cm = 350pi sq cm --------------- The outer radius is 4.2 cm = 420pi sq cm ----------------- The area of each end is sq cm ===================== Total area = 780.78*pi sq cm
 logarithm/713009: Write the equations in logarithmic form. a = b^c 1 solutions Answer 438994 by Alan3354(30993)   on 2013-02-15 09:09:07 (Show Source): You can put this solution on YOUR website!Write the equations in logarithmic form. a = b^c ------
 Graphs/714819: Find three solutions of the equation for y 6y=30x-6 when x is 0 I have two other values for x but I hope to figure them out from your example1 solutions Answer 438992 by Alan3354(30993)   on 2013-02-15 08:54:23 (Show Source): You can put this solution on YOUR website!Find three solutions of the equation for y 6y=30x-6 when x is 0 I have two other values for x but I hope to figure them out from your example ----------- 6y = 30x - 6 y = 5x - 1 ------- x = 0 --> y = -1 ------ x = 1 y = 5*1 - 1 = 4 x = 1 --> y = 4 ------ x = 2 y = 5*2 - 1 = 9 x = 2 --> y = 9 --- x = 100 y = 5*100 - 1 = 499
 Proportions/714650: If a 0.27 cm long crystal appears to be 13.5 cm long under a microscope, what is the power of the microscope?1 solutions Answer 438932 by Alan3354(30993)   on 2013-02-14 20:24:51 (Show Source): You can put this solution on YOUR website!If a 0.27 cm long crystal appears to be 13.5 cm long under a microscope, what is the power of the microscope? ------------------ 13.5/0.27 = 50x
 Linear-systems/714613: Hi! How to solve: x^2+y^2=25 x+y=1 Thank you!1 solutions Answer 438915 by Alan3354(30993)   on 2013-02-14 18:45:15 (Show Source): You can put this solution on YOUR website!How to solve: x^2+y^2=25 x+y=1 --------------- y = 1 - x Sub for y in the 1st eqn
 Quadratic_Equations/714640: One number is four more than three times another number. Find the numbers if the product is 175. What I have tried: 3n(n+4)= 175 3n^2+9-175 1 solutions Answer 438914 by Alan3354(30993)   on 2013-02-14 18:44:11 (Show Source): You can put this solution on YOUR website!One number is four more than three times another number. Find the numbers if the product is 175. What I have tried: 3n(n+4)= 175 **** How did you come up with that? --------------- n = a number The other number is 4 plus 3 times the 1st number, = 3n+4 -------------- n*(3n+4) = 175 Start from there.
 Polygons/714563: What does one side of a regular decagon equal?1 solutions Answer 438913 by Alan3354(30993)   on 2013-02-14 18:37:13 (Show Source): You can put this solution on YOUR website!What does one side of a regular decagon equal? --------------- It equals any of the other sides.
 Exponents/714617: can you help me simplify the equation of (-4/c)and the exponent of 2? 1 solutions Answer 438912 by Alan3354(30993)   on 2013-02-14 18:30:47 (Show Source): You can put this solution on YOUR website!can you help me simplify the equation of (-4/c)and the exponent of 2? ------------------ Equations have equal signs. Equal, equate, equation has no equal sign, so it's not an equation. ------------------ Is that simpler? Or just different?
 Linear-systems/714573: Please, I need help answering this question. I have been at it for 15 minutes.. (2,8); 3x + y = 51 solutions Answer 438890 by Alan3354(30993)   on 2013-02-14 15:34:38 (Show Source): You can put this solution on YOUR website!Please, I need help answering this question. I have been at it for 15 minutes.. (2,8); 3x + y = 5 --------- (2,8) is a point. 3x + y = 5 is a line. Is that it?
 Numeric_Fractions/714569: n/8 = 5 1/5 we need to find n1 solutions Answer 438882 by Alan3354(30993)   on 2013-02-14 15:23:58 (Show Source): You can put this solution on YOUR website!n/8 = 5 1/5 we need to find n ------------ n/8 = 26/5 Cross multiply 5n = 8*26 etc
 Exponents/714548: HOW DO INVERSE DISTRIBUTIVE, DISTRIBUTIVE ASSOCIATIVE PROPERTIES 1 solutions Answer 438865 by Alan3354(30993)   on 2013-02-14 14:36:35 (Show Source): You can put this solution on YOUR website! HOW DO INVERSE DISTRIBUTIVE, DISTRIBUTIVE ASSOCIATIVE PROPERTIES --------------------- Do you have a question?
 Reduction-of-unit-multipliers/714540: change 280 ml in 15 hours to microdrops per minute 1 solutions Answer 438864 by Alan3354(30993)   on 2013-02-14 14:35:43 (Show Source): You can put this solution on YOUR website!change 280 ml in 15 hours to microdrops per minute ------------- 1 udrop/min = 900 in 15 hours I don't know how many are in a ml
 Bodies-in-space/714551: How many gallons are in a cylinder with a diameter of 8.5 inches and height of 8.5 inches?1 solutions Answer 438862 by Alan3354(30993)   on 2013-02-14 14:34:23 (Show Source): You can put this solution on YOUR website!How many gallons are in a cylinder with a diameter of 8.5 inches and height of 8.5 inches? ------------- r = d/2 cubic inches convert to gallons
 Functions/714552: What is the answer the answer to 4÷h=101 solutions Answer 438861 by Alan3354(30993)   on 2013-02-14 14:31:06 (Show Source): You can put this solution on YOUR website!What is the answer the answer to 4÷h=10 ------------- It depends on the question.
 Numbers_Word_Problems/714549: the sum of two consecutive integers is 69.find the two numbers 1 solutions Answer 438860 by Alan3354(30993)   on 2013-02-14 14:30:08 (Show Source): You can put this solution on YOUR website!the sum of two consecutive integers is 69.find the two numbers ---------------- 69/2 = 34.5, the center --> 34 & 35 ================= n + (n+1) = 69 etc
 Equations/714533: How can i solve log(5)31251 solutions Answer 438851 by Alan3354(30993)   on 2013-02-14 14:00:25 (Show Source): You can put this solution on YOUR website!How can i solve log(5)3125 ------------ Change of base always works. ---- If you recognize that 3125 = 5^5 (not everyone does), then
 Word_Problems_With_Coins/714502: A vending machine that takes only dimes and quarters contain 30 coins, with a total value of \$4.20. How many of each coin are there? 1 solutions Answer 438849 by Alan3354(30993)   on 2013-02-14 13:45:22 (Show Source): You can put this solution on YOUR website!A vending machine that takes only dimes and quarters contain 30 coins, with a total value of \$4.20. How many of each coin are there? --------------------- d + q = 30 (# of coins) 10d + 25q = 420 (total cents) Can you do the rest? ==================== Another method: 30 dimes = \$3.00 For each dime replaced by a quarter, 15 cents is added 420 - 300 = 120 120/15 = 8 quarters 22 dimes
 Travel_Word_Problems/714536: A car travels 49 miles in 1 hour and 45 minutes. What is the average speed of the car?1 solutions Answer 438848 by Alan3354(30993)   on 2013-02-14 13:38:18 (Show Source): You can put this solution on YOUR website!A car travels 49 miles in 1 hour and 45 minutes. What is the average speed of the car? ----------- 1:45 = 1.75 hours d = r*t r = d/t
 Travel_Word_Problems/714542: Rene is going to the lake to visit some friends. If the lake is 60 miles away, and Rene is driving at 40 miles per hour the entire time, how long will it take her to get to the lake?1 solutions Answer 438847 by Alan3354(30993)   on 2013-02-14 13:36:42 (Show Source): You can put this solution on YOUR website!Rene is going to the lake to visit some friends. If the lake is 60 miles away, and Rene is driving at 40 miles per hour the entire time, how long will it take her to get to the lake? ------------------- d = r*t t = d/r
 Travel_Word_Problems/714481: a car travels at 21x y^2 Kilometers per hour. How far will the car travel in: a. (2x+y) hours b. (2x+1) hour c. (y+2) hours d. st1 solutions Answer 438839 by Alan3354(30993)   on 2013-02-14 12:57:53 (Show Source): You can put this solution on YOUR website!a car travels at 21x y^2 Kilometers per hour. How far will the car travel in: a. (2x+y) hours b. (2x+1) hour c. (y+2) hours d. st ---------------- The speed expression is not clear. ---- d = r*t, r = the rate, or speed a. d = r*(2x+y) etc
 Triangles/714511: how do you change a obtuse angled scalene triangle into a rectangle1 solutions Answer 438838 by Alan3354(30993)   on 2013-02-14 12:55:26 (Show Source): You can put this solution on YOUR website!how do you change a obtuse angled scalene triangle into a rectangle ------------ You can't. A triangle will always be a triangle. ----------
 Rate-of-work-word-problems/714521: 100 sheets of paper were used to make a storybook, how many sheets of paper are needed to make a 300 page storybook1 solutions Answer 438837 by Alan3354(30993)   on 2013-02-14 12:53:42 (Show Source): You can put this solution on YOUR website!duplicate
 Travel_Word_Problems/714522: How far will a train travel if it is going at 80mph for half an hour?1 solutions Answer 438836 by Alan3354(30993)   on 2013-02-14 12:53:13 (Show Source): You can put this solution on YOUR website!How far will a train travel if it is going at 80mph for half an hour? ------------- In an hour, it goes 80 miles --> 80 mi/hr In 1/2 hour, it goes 1/2 as far.
 Miscellaneous_Word_Problems/714530: 100 sheets of paper were used to make a storybook, how many sheets of paper are needed to make a 300 page storybook?1 solutions Answer 438833 by Alan3354(30993)   on 2013-02-14 12:51:59 (Show Source): You can put this solution on YOUR website!100 sheets of paper were used to make a storybook, how many sheets of paper are needed to make a 300 page storybook? --------------- If it's one sheet per page, 300.
 Rate-of-work-word-problems/714528: Person 1 can do a certain job in twenty-one minutes, and person 2 can do the same job in twenty-eight minutes. When completing the job together, which expression would be used to represent the amount of work done by person 1? 1 solutions Answer 438832 by Alan3354(30993)   on 2013-02-14 12:51:01 (Show Source): You can put this solution on YOUR website!Person 1 can do a certain job in twenty-one minutes, and person 2 can do the same job in twenty-eight minutes. When completing the job together, which expression would be used to represent the amount of work done by person 1? ------------- Anything you like. x, y, P1, P21, f, etc ----------
 Angles/714479: Suppose that angles measure 2x and 4x+6 are supplementary. What are the measures of the angles1 solutions Answer 438806 by Alan3354(30993)   on 2013-02-14 08:57:18 (Show Source): You can put this solution on YOUR website!Suppose that angles measure 2x and 4x+6 are supplementary. What are the measures of the angles ------------- 2x + (4x+6) = 180 degs