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# Recent problems solved by 'Alan3354'

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 logarithm/687548: ln5+lnx^4=4051 solutions Answer 425195 by Alan3354(30993)   on 2012-11-30 11:28:00 (Show Source): You can put this solution on YOUR website!ln5+lnx^4=405 ---------------- ln(5x^4) = 405 x=~ 6.274423E43
 Trigonometry-basics/687537: how you graph x-2y=0 y=2x-31 solutions Answer 425193 by Alan3354(30993)   on 2012-11-30 11:23:00 (Show Source): You can put this solution on YOUR website!how you graph x-2y=0 y=2x-3 --------------- They're straight lines, so you need 2 points. Pick values for x and find y. Plot the points. Draw a line thru them.
 �t�e�s�t/687550: Find the midpoint of the line segment joining the points p1 and p2 P1=(2,1) p2=(-3,0)1 solutions Answer 425191 by Alan3354(30993)   on 2012-11-30 11:21:41 (Show Source): You can put this solution on YOUR website!Find the midpoint of the line segment joining the points p1 and p2 P1=(2,1) p2=(-3,0) -------------- Find the average of x & y separately M = (avg x, avg y)
 Trigonometry-basics/687544: i need help with this proble y=2x-2 y=-x+41 solutions Answer 425190 by Alan3354(30993)   on 2012-11-30 11:19:31 (Show Source): You can put this solution on YOUR website!i need help with this proble y=2x-2 y=-x+4 ------------- Both RH sides = y, so 2x-2 = -x+4
 Linear_Algebra/685626: i need the steps of how to solve the following equation. 4x-5y=28 5x+6Y=141 solutions Answer 425162 by Alan3354(30993)   on 2012-11-30 08:15:54 (Show Source): You can put this solution on YOUR website!4x-5y=28 5x+6Y=14 ================ -5(4x -5y =28) 4(5x +6y =14) -20x +25y =-140 20x +24y = 56 ------------------ Add 49y = -84 y = -12/7 ================ 4x - 5y = 28 4x + 60/7 = 28 x + 15/7 = 7 x = 34/7
 Numbers_Word_Problems/687467: The sum of 2 consecutive integers is 1, 105. what are the two integers?1 solutions Answer 425160 by Alan3354(30993)   on 2012-11-30 08:10:21 (Show Source): You can put this solution on YOUR website!The sum of 2 consecutive integers is 1, 105. what are the two integers? ------------ 1105/2 = 552.5 --> 552 & 553
 Polynomials-and-rational-expressions/687282: factoring 64x^3 -11 solutions Answer 425109 by Alan3354(30993)   on 2012-11-29 20:30:30 (Show Source): You can put this solution on YOUR website!factoring 64x^3 -1 ------------- It's a difference of 2 cubes.
 logarithm/687295: I need help solving this I have tried it for about 20 mins now! Log (3x-1+log2=log4+log(x+2))1 solutions Answer 425104 by Alan3354(30993)   on 2012-11-29 20:08:17 (Show Source): You can put this solution on YOUR website!Log (3x-1+log2=log4+log(x+2) The parentheses are not right. If you mean: Log(3x-1) + log(2) = log(4)+log(x+2) log(2*(3x-1)) = log(4*(x+2)) 2*(3x-1) = 4*(x+2) 6x-2 = 4x+8 x = 5
 Coordinate-system/687292: what is the x- intercept and y-intercept of the equation 6x+1/3y=1/3...i have (2,0) for the x-int. but cant seem to figure out the y-int.1 solutions Answer 425101 by Alan3354(30993)   on 2012-11-29 19:58:38 (Show Source): You can put this solution on YOUR website!what is the x- intercept and y-intercept of the equation 6x+1/3y=1/3 --------------- 6x+1/3y=1/3 At the x-int y = 0 6x = 1/3 --> x = 1/18 --> (1/18,0) --------------- At the y-int x = 0 (1/3)y = 1/3 --> y = 1 --> (0,1)
 Equations/687185: literal equations and dimension analysis. d= rt, for r 6w-y=2z, for 2 9s-5g= -4u, for s 1 solutions Answer 425085 by Alan3354(30993)   on 2012-11-29 18:19:12 (Show Source): You can put this solution on YOUR website!literal equations and dimension analysis. d= rt, for r Give it a try. ----------------- 6w-y=2z, for 2 Divide both sides by z. ------------------ 9s-5g= -4u, for s Add 5g Divide by 9
 test/687203: the perimeter of a triangle is 48 centimeters. If the ratio of its length to its width is 11:4, Find the dimensions of the rectangle.1 solutions Answer 425081 by Alan3354(30993)   on 2012-11-29 18:13:38 (Show Source): You can put this solution on YOUR website!the perimeter of a triangle is 48 centimeters. If the ratio of its length to its width is 11:4, Find the dimensions of the rectangle. ------------------ How many sides does this triangle/rectangle have?
 expressions/687210: Can you help me to simplify: 5/4+2/x?1 solutions Answer 425076 by Alan3354(30993)   on 2012-11-29 18:07:06 (Show Source): You can put this solution on YOUR website!Can you help me to simplify: 5/4+2/x? -------------- Find a common denominator to add them. The product of the DEN's always works
 Equations/687208: how would I solve 2x=3x-6? 1 solutions Answer 425073 by Alan3354(30993)   on 2012-11-29 18:02:27 (Show Source): You can put this solution on YOUR website!how would I solve 2x=3x-6? --------- Step 1, get all the x terms on one side of the equal sign.
 test/687206: 3x^5y^4/xy^21 solutions Answer 425071 by Alan3354(30993)   on 2012-11-29 17:59:42 (Show Source): You can put this solution on YOUR website!3x^5y^4/xy^2 ------------ Cancel any terms that are in the NUM and the DEN eg, x
 Polynomials-and-rational-expressions/687205: what is 15y3+6y2+3y divided 3y when you simplify 1 solutions Answer 425070 by Alan3354(30993)   on 2012-11-29 17:58:36 (Show Source): You can put this solution on YOUR website!what is 15y3+6y2+3y divided 3y when you simplify -----------
 Volume/687190: what would be the volume of a cone with a height of 10ft and radius of the base is 3ft1 solutions Answer 425069 by Alan3354(30993)   on 2012-11-29 17:55:57 (Show Source): You can put this solution on YOUR website!what would be the volume of a cone with a height of 10ft and radius of the base is 3ft -----------
 expressions/687199: find the x and y intercepts of 2x+4y = -81 solutions Answer 425068 by Alan3354(30993)   on 2012-11-29 17:54:24 (Show Source): You can put this solution on YOUR website!find the x and y intercepts of 2x+4y = -8 --------- At the x-int, y = 0 At the y-int, x = 0
 Matrices-and-determiminant/687068: Solve the problem using matrices. A chemist has prepared two acid solutions, one of which is 6% acid by volume, another 10% acid. How many cubic centimeters of each should the chemist mix together to obtain 50 cm3 of a solution that is acid. Answers: No solution 23 cm3 of 6%; 27 cm3 of 10% 50 cm3 of 6%; 50 cm3 of 10% 4.08 cm3 of 6%; 45.92 cm3 of 10% I think it is no solution, can someone show me all of the steps and the answer so I know how to do it? thank you 1 solutions Answer 425043 by Alan3354(30993)   on 2012-11-29 16:16:45 (Show Source): You can put this solution on YOUR website!Solve the problem using matrices. A chemist has prepared two acid solutions, one of which is 6% acid by volume, another 10% acid. How many cubic centimeters of each should the chemist mix together to obtain 50 cm3 of a solution that is acid. ------------- Any mix of the 2 will be acid, between 6% and 10%. ----- The 2nd choice is 100 cc, tho, not 50.
 Numbers_Word_Problems/687058: 7 odd numbers their sumation is equal to 401 solutions Answer 425027 by Alan3354(30993)   on 2012-11-29 15:32:24 (Show Source): You can put this solution on YOUR website!7 odd numbers their sumation is equal to 40 -------------- An odd number of odd numbers is an odd number. Can't be 40.
 Travel_Word_Problems/687066: If Paul is rollerblading 3 miles per hour, how long will it take him to get 3 miles?1 solutions Answer 425026 by Alan3354(30993)   on 2012-11-29 15:30:25 (Show Source): You can put this solution on YOUR website!If Paul is rollerblading 3 miles per hour, how long will it take him to get 3 miles? ------------ 3 MILES PER HOUR means - in an hour, he goes 3 miles.
 Rational-functions/687053: I need to complete a table of values and graph the following f(x)=4/x^21 solutions Answer 425023 by Alan3354(30993)   on 2012-11-29 15:27:13 (Show Source): You can put this solution on YOUR website!I need to complete a table of values and graph the following f(x)=4/x^2 ------------ Pick values for x (not zero) and find f(x) Plot the points. Draw a curve thru them.
 Graphs/686991: how do you graph x+y=5?1 solutions Answer 424975 by Alan3354(30993)   on 2012-11-29 11:09:01 (Show Source): You can put this solution on YOUR website!how do you graph x+y=5? ------------ Solve for x or y y = -x + 5 Pick 2 (or more) values for and find y. Plot the 2 (at least) points. Draw a line thru them.
 Expressions-with-variables/686957: 5x + y = 7 3y = 21 - 15x1 solutions Answer 424972 by Alan3354(30993)   on 2012-11-29 11:01:00 (Show Source): You can put this solution on YOUR website!5x + y = 7 3y = 21 - 15x ------------- This is the same eqn twice --> dependent, infinite # of solutions, no unique solution.
 Expressions-with-variables/686965: (x/3) = (y/3) = 0 x-y = 81 solutions Answer 424969 by Alan3354(30993)   on 2012-11-29 10:56:04 (Show Source): You can put this solution on YOUR website!(x/3) = (y/3) = 0 ------------- Too many equal signs.
 Travel_Word_Problems/686973: if a vehicle averages 28mph over 500 meters what was its top speed from a standing start.1 solutions Answer 424962 by Alan3354(30993)   on 2012-11-29 10:36:05 (Show Source): You can put this solution on YOUR website!if a vehicle averages 28mph over 500 meters what was its top speed from a standing start. ---------------- If it starts at 0 and averages 28 mi/hr with uniform acceleration, the end speed is 56 mi/hr, regardless of the distance.
 Travel_Word_Problems/686930: starting at 0km/h ending at top speed of 5km/h how far would I travel in 4 seconds1 solutions Answer 424959 by Alan3354(30993)   on 2012-11-29 10:24:26 (Show Source): You can put this solution on YOUR website!starting at 0km/h ending at top speed of 5km/h how far would I travel in 4 seconds ------------ If you mean you accelerate from 0 to 5 km/hr in 4 seconds, then -- 5 km/hr = 25/18 meters/sec accel = 5/4 = 25/72 m/sec/sec ---- s = at^2/2 = (25/72)*4^2/2 meters s = 50/9 meters
 Systems-of-equations/686736: elimination using addition and subtraction, 5x+2y=7, and -2x+2y=-141 solutions Answer 424884 by Alan3354(30993)   on 2012-11-28 20:41:38 (Show Source): You can put this solution on YOUR website!elimination using addition and subtraction, 5x+2y=7, and -2x+2y=-14 ---------- 5x+ 2y =7 -2x+2y=-14 ------------- Subtract
 Numeric_Fractions/686742: (3/4 - 2/3)+(1/2+1/3) I do not remember what the parenthesis mean divide, multiply, subtract? PLease can you provide me with a detailed (really detailed) step by step explanation of how to do this equation? I am taking the compass entrance test. Thank you 1 solutions Answer 424883 by Alan3354(30993)   on 2012-11-28 20:40:11 (Show Source): You can put this solution on YOUR website!(3/4 - 2/3)+(1/2+1/3) I do not remember what the parenthesis mean divide, multiply, subtract? PLease can you provide me with a detailed (really detailed) step by step explanation of how to do this equation? I am taking the compass entrance test. --------------------- What equation? Equations have equal signs: equal, equate, equation.
 Geometry_Word_Problems/686737: Hey can anyone help me with this If the length of two sides of a triangle are 2 and 5, the length of the third side could be A). 1 B). 2 C). 6 D). 71 solutions Answer 424881 by Alan3354(30993)   on 2012-11-28 20:38:54 (Show Source): You can put this solution on YOUR website!Hey can anyone help me with this If the length of two sides of a triangle are 2 and 5, the length of the third side could be A). 1 B). 2 C). 6 D). 7 -------------- Why can't it be any of them?
 Percentage-and-ratio-word-problems/686740: what is 5% of 2241 solutions Answer 424880 by Alan3354(30993)   on 2012-11-28 20:38:08 (Show Source): You can put this solution on YOUR website!what is 5% of 224 ----- = 0.05*224