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# Recent problems solved by 'Alan3354'

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 Sequences-and-series/675337: find the next term of the sequence {1,4,11,26,57,120,...}?1 solutions Answer 419760 by Alan3354(30993)   on 2012-11-03 10:03:40 (Show Source): You can put this solution on YOUR website!find the next term of the sequence {1,4,11,26,57,120,...}? ---------- Term n = term n-1 + 2^n - 1 247
 Travel_Word_Problems/675293: If your traveling 30 miles per hour, how far would you travel in 18 minutes? What formula would you use to solve these types of equations.1 solutions Answer 419759 by Alan3354(30993)   on 2012-11-03 09:57:28 (Show Source): You can put this solution on YOUR website!If your [sic] traveling 30 miles per hour, how far would you travel in 18 minutes? What formula would you use to solve these types of equations. -------------- 18 mins = 0.3 hours d = r*t
 Expressions-with-variables/675235: 10^7X(2X10^2)^41 solutions Answer 419695 by Alan3354(30993)   on 2012-11-02 22:14:57 (Show Source): You can put this solution on YOUR website!10^7X(2X10^2)^4 ------------- Is X a variable? or does it mean multiply?
 Travel_Word_Problems/675186: You are riding your bike to prepare for a race. It takes you 12 min to go 2.5 mi. If you continue traveling at the same rate, how long will it take you to go 7 mi? 1 solutions Answer 419645 by Alan3354(30993)   on 2012-11-02 18:08:42 (Show Source): You can put this solution on YOUR website!You are riding your bike to prepare for a race. It takes you 12 min to go 2.5 mi. If you continue traveling at the same rate, how long will it take you to go 7 mi? -------------------- 12/2.5 = t/7 2.5t = 84 t = 33.6 minutes
 Trigonometry-basics/675197: If sin(a + b) = 1 and tan(a) = 0, then tan(b) is (a) undefined (b) 1 (c) 0 (d) 1/4 (e) 1/2 1 solutions Answer 419644 by Alan3354(30993)   on 2012-11-02 18:06:51 (Show Source): You can put this solution on YOUR website!If sin(a + b) = 1 and tan(a) = 0, then tan(b) is ------------ tan(a) = 0 --> a = 0, pi --> sin(a) = 0 --> a = 0 b = pi/2 tan(pi/2) = undefined
 Polynomials-and-rational-expressions/675150: 8y^2+14y+3 and i am factoring using grouping method .. is my answer 6y(4y+1)^21 solutions Answer 419592 by Alan3354(30993)   on 2012-11-02 13:01:08 (Show Source): You can put this solution on YOUR website!8y^2+14y+3 and i am factoring using grouping method .. is my answer 6y(4y+1)^2 ---------------- ------------ 8y^2+14y+3 = (2y + 3)*(4y + 1)
 Travel_Word_Problems/674979: You can run 1:5 mile in two minutes. How long will it take u to run 2 miles?1 solutions Answer 419501 by Alan3354(30993)   on 2012-11-01 22:05:55 (Show Source): You can put this solution on YOUR website!You can run 1:5 mile in two minutes. How long will it take u to run 2 miles? ------------ What is 1:5 mile?
 Linear_Algebra/674992: f(X)=2/x^2-2x-3, what is the Y-intercept?1 solutions Answer 419500 by Alan3354(30993)   on 2012-11-01 22:04:59 (Show Source): You can put this solution on YOUR website!f(X)=2/x^2-2x-3, what is the Y-intercept? --------------- What is the denominator?
 Proportions/674946: How fast was a car traveling if it left a 140 ft long skid mark when it was forced to stop quickly.1 solutions Answer 419480 by Alan3354(30993)   on 2012-11-01 20:54:29 (Show Source): You can put this solution on YOUR website!How fast was a car traveling if it left a 140 ft long skid mark when it was forced to stop quickly. ----------- Not enough info
 Polynomials-and-rational-expressions/674950: I really need help with this problem x^2/x-72=? is the trinomial prime? 1 solutions Answer 419479 by Alan3354(30993)   on 2012-11-01 20:53:43 (Show Source): You can put this solution on YOUR website!I really need help with this problem x^2/x-72=? is the trinomial prime? ------------------ What trinomial?
 Quadratic_Equations/674951: I really need some assistants with this equation. (4x/9)(7x^2/8x/41 solutions Answer 419478 by Alan3354(30993)   on 2012-11-01 20:52:53 (Show Source): You can put this solution on YOUR website!I really need some assistants [sic] with this equation. (4x/9)(7x^2/8x/4 ----------- It's not an equation. I can tell, there's no equal sign. The parentheses don't match, needs clarification.
 test/674943: Hello what does 3/8 equal to. I was thinking 3.375 can you please send me the work out of how you get that answer. Thanks!1 solutions Answer 419474 by Alan3354(30993)   on 2012-11-01 20:43:27 (Show Source): You can put this solution on YOUR website!Hello what does 3/8 equal to. I was thinking 3.375 can you please send me the work out of how you get that answer. ---------- 3/8 = 0.375 ------------- 3/8 = (3/2)/2/2 Or, = 3*0.5*0.5*0.5 --------- Working it out is similar to working out 2 times 2.
 Linear-systems/674914: -4x+y=6 -5x-y=211 solutions Answer 419473 by Alan3354(30993)   on 2012-11-01 20:42:03 (Show Source): You can put this solution on YOUR website!-4x+y=6 -5x-y=21 ---------- Add
 Angles/674940: if measurement of angle 5= 2x+15 and the measurement of angle 7= 5x-48 find the measurement of angle 51 solutions Answer 419472 by Alan3354(30993)   on 2012-11-01 20:41:19 (Show Source): You can put this solution on YOUR website!if measurement of angle 5= 2x+15 and the measurement of angle 7= 5x-48 find the measurement of angle 5 ------------ Not enough info. Are these angles related? In the same polygon?
 Quadratic-relations-and-conic-sections/674934: Graph the ellipse. 16(x - 1)^2 + 9(y + 2)^2 = 1441 solutions Answer 419471 by Alan3354(30993)   on 2012-11-01 20:38:10 (Show Source): You can put this solution on YOUR website!Graph the ellipse. 16(x - 1)^2 + 9(y + 2)^2 = 144 ------------ Solve for x or y. Then pick values for one, and find the other variable. Plot the points, draw the curve thru them. --------
 logarithm/674936: how do you write 3ln(e^2 -e)-3 as a single logarithm? 1 solutions Answer 419470 by Alan3354(30993)   on 2012-11-01 20:36:38 (Show Source): You can put this solution on YOUR website!how do you write 3ln(e^2 -e)-3 as a single logarithm? ------------------ 3ln(e^2 -e)-3 is a single logarithm. ---- ln(2) + ln(3), for example, is not.
 Linear-systems/674916: 4x+8y=20 -4x+2y=-301 solutions Answer 419462 by Alan3354(30993)   on 2012-11-01 20:22:20 (Show Source): You can put this solution on YOUR website!4x +8y =20 -4x+2y=-30 ------------- Add
 test/674756: 17xy^3x^2yx^4 ^= power1 solutions Answer 419414 by Alan3354(30993)   on 2012-11-01 16:58:16 (Show Source): You can put this solution on YOUR website!17xy^3x^2yx^4 ----------- What's your question?
 Polynomials-and-rational-expressions/674727: How do you do 16b squared minus 40b plus 25?1 solutions Answer 419408 by Alan3354(30993)   on 2012-11-01 16:44:45 (Show Source): You can put this solution on YOUR website!How do you do 16b squared minus 40b plus 25? --------- It depends on what you mean by "do."
 Roman-numerals/668200: will a girl sk me1 solutions Answer 419330 by Alan3354(30993)   on 2012-11-01 08:50:15 (Show Source): You can put this solution on YOUR website!You don't need to post math problems for help, your future is in comedy. That was hilarious.
 Rectangles/674557: The velocity v (in feet per second) of an object dropped from tall building after falling d feet is given by the mathematical model v = . What is the velocity of an object that has fallen 121 feet?1 solutions Answer 419329 by Alan3354(30993)   on 2012-11-01 08:44:28 (Show Source): You can put this solution on YOUR website!The velocity v (in feet per second) of an object dropped from tall building after falling d feet is given by the mathematical model v = . What is the velocity of an object that has fallen 121 feet? --------------- v = a*t where a is gravitational acceleration ~ 32 ft/sec/sec s = at^2/2 (s = distance in ft) v = 88 ft/sec
 Travel_Word_Problems/674565: if a whale is travelling at 55 kilometres an hour how far has he travelled in six hours1 solutions Answer 419326 by Alan3354(30993)   on 2012-11-01 08:30:02 (Show Source): You can put this solution on YOUR website!if a whale is travelling at 55 kilometres an hour how far has he travelled in six hours -------------- d = r*t
 test/674567: NeeD a tutor to help me with college algebra 11 solutions Answer 419325 by Alan3354(30993)   on 2012-11-01 08:28:33 (Show Source): You can put this solution on YOUR website!NeeD a tutor to help me with college algebra 1 =============== What do you have in mind? Some of the tutors express an interest in income, look at the list.
 Quadratic-relations-and-conic-sections/674512: find the center and radius of x^+y^2-8x2y+8=01 solutions Answer 419281 by Alan3354(30993)   on 2012-10-31 22:53:22 (Show Source): You can put this solution on YOUR website!find the center and radius of x^+y^2-8x2y+8=0 ---------- What is x^ ? and 8x2y ?
 test/674472: simplify by rationalizing the denominatior 5√(2)/(2-1)1 solutions Answer 419279 by Alan3354(30993)   on 2012-10-31 22:31:37 (Show Source): You can put this solution on YOUR website!simplify by rationalizing the denominatior 5√(2)/(2-1) ========= = =~ 7.0711
 Equations/674448: i need help solving an equation with fractions in it. I have worked it out but i want to be sure my answer is correct. Original problem 3-2/5x=6 i did -2/5x=6-3 -2/5x=3 x=3/1(divided)-5/2 x=3/1*-5/2=-15/21 solutions Answer 419277 by Alan3354(30993)   on 2012-10-31 22:29:11 (Show Source): You can put this solution on YOUR website!Original problem 3-2/5x=6 i did -2/5x=6-3 -2/5x=3 x=3/1(divided)-5/2 x=3/1*-5/2=-15/2 ------------ It's correct, but I would eliminate fractions first. 3 - (2/5)x = 6 Times 5: 15 - 2x = 30 -2x = 15 x = -15/2
 Numeric_Fractions/674321: how do you get an answer to a problem that is 7 7/32 - 2 18/321 solutions Answer 419156 by Alan3354(30993)   on 2012-10-31 14:15:02 (Show Source): You can put this solution on YOUR website!how do you get an answer to a problem that is 7 7/32 - 2 18/32 231/32 - 82/32 = 149/32
 �t�e�s�t/674227: Find the equation of the line with the given properties. Express.the equation in general form or slope intercept form perpendicular to the line -3x+y=-21 containing points (6,-4)1 solutions Answer 419128 by Alan3354(30993)   on 2012-10-31 12:30:56 (Show Source): You can put this solution on YOUR website!Find the equation of the line with the given properties. Express.the equation in general form or slope intercept form perpendicular to the line -3x+y=-21 containing points (6,-4) =========== -3x+y=-21 y = 3x - 21 Slope = 3 The slope of lines perpendicular is the negative inverse, = -1/3 --------- Use y = mx + b and the point to find b, the y-intercept -4 = (-1/3)*6 + b b = -2 --> y = (-1/3)x - 2 Or y = -x/3 - 2 (better format) ------ x + 3y = -6 (standard format)
 Systems-of-equations/674282: 5u+3v=-16 2u+v=-5 use method of elimination to solve the system of equations1 solutions Answer 419122 by Alan3354(30993)   on 2012-10-31 12:21:32 (Show Source): You can put this solution on YOUR website!5u+3v=-16 2u+v=-5 use method of elimination to solve the system of equations =========== Multiply the 2nd eqn by 3, then subtract.
 Complex_Numbers/674250: 64x^(2)-16x+31 solutions Answer 419114 by Alan3354(30993)   on 2012-10-31 11:21:55 (Show Source): You can put this solution on YOUR website!64x^(2)-16x+3 ------------- What about it?
 percentage/674238: what's 40% off 156 dollars1 solutions Answer 419113 by Alan3354(30993)   on 2012-10-31 11:18:05 (Show Source): You can put this solution on YOUR website!what's 40% off 156 dollars ---------- What do you mean by off? That's not a math operation.