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# Recent problems solved by 'Alan3354'

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 logarithm/427906: express 3logx-2logy as a single logarithm1 solutions Answer 297506 by Alan3354(30993)   on 2011-03-27 20:05:09 (Show Source): You can put this solution on YOUR website!3log(x)-2log(y) = =
 Functions/427904: If i'm given g(1)=5 g(5)=17 what formula should I use to figure out g(-3)1 solutions Answer 297505 by Alan3354(30993)   on 2011-03-27 20:03:43 (Show Source): You can put this solution on YOUR website!Not enough info. An infinite number of functions can pass thru the 2 given points.
 Quadratic_Equations/427860: Four added to the product of 3 and -11 is what number? Please show me the steps to get the answer. Thanks1 solutions Answer 297504 by Alan3354(30993)   on 2011-03-27 20:02:23 (Show Source): You can put this solution on YOUR website!Four added to the product of 3 and -11 is what number? ------------- 3*-11 + 4 = -29
 Circles/427882: How do we find other points on a circle when given only one point? ex: If I know a point is (3,-5), what is the point opposite from it with a center of (0,0)?1 solutions Answer 297502 by Alan3354(30993)   on 2011-03-27 19:59:34 (Show Source): You can put this solution on YOUR website!How do we find other points on a circle when given only one point? ex: If I know a point is (3,-5), what is the point opposite from it with a center of (0,0)? ---------------- If the center is the Origin, it's the negative of the point. --> (-3,5)
 Exponents-negative-and-fractional/427903: what is 16º simplified?1 solutions Answer 297501 by Alan3354(30993)   on 2011-03-27 19:56:13 (Show Source): You can put this solution on YOUR website!I don't know how it might be simpler.
 Triangles/427674: Find the distance traveled in one back and forth swing by the weight of a 12in pendulum that swings through a 75 degrees?1 solutions Answer 297416 by Alan3354(30993)   on 2011-03-27 13:01:52 (Show Source): You can put this solution on YOUR website! = 5pi inches =~ 15.71 inches ---------------
 Exponents/427677: I could sure use a help on one of my math problems, I am trying very hard to get it all of this. Can someone help me on this and in understanding how to do it? X^25*X+1/2X^40= * indicates multiply1 solutions Answer 297415 by Alan3354(30993)   on 2011-03-27 12:58:54 (Show Source): You can put this solution on YOUR website!X^25*X+1/2X^40 * indicates multiply --------------- It's not clear what the numerator is or ? or maybe it's ??
 Miscellaneous_Word_Problems/427645: have shore house for 6,600 for 3 weeks, 8 people staying the full 3 weeks,2 people for 2 full weeks,1 for 7 days,1 for 9 days. i cant figure out a fair payment for everyone,can u help1 solutions Answer 297413 by Alan3354(30993)   on 2011-03-27 12:38:45 (Show Source): You can put this solution on YOUR website! have shore house for 6,600 for 3 weeks, 8 people staying the full 3 weeks,2 people for 2 full weeks,1 for 7 days,1 for 9 days. i cant figure out a fair payment for everyone,can u help -------------------------- 6600/21 = \$314.29 per day If you split the \$314 by the # there each day, it's close to fair.
 Parallelograms/427666: Find values of x and y for which ABCD must be a parallellogram. 3y+3= x-11 5y-6=x+21 solutions Answer 297412 by Alan3354(30993)   on 2011-03-27 12:35:09 (Show Source): You can put this solution on YOUR website!How are A,B,C & D related to the 2 equations?
 Surface-area/427669: What is the area of a triangle with a base of 7 1/2 inches and a height of 4 2/3 inches? 1 solutions Answer 297411 by Alan3354(30993)   on 2011-03-27 12:33:44 (Show Source): You can put this solution on YOUR website!Area = b*h/2 = (15/2)*(14/3)/2 = 210/12 = 35/4 sq inches
 Equations/427646: (6-4){2-4(-8)}1 solutions Answer 297410 by Alan3354(30993)   on 2011-03-27 12:19:24 (Show Source): You can put this solution on YOUR website!(6-4){2-4(-8)} = (6-4){2-(-32)} = (6-4){34) = (2){34) = 68
 Quadratic_Equations/427602: If x is real, the value of 3x^2 + 9x + 17 divided by 3x^2 + 9x + 7 is ? 1 solutions Answer 297409 by Alan3354(30993)   on 2011-03-27 12:17:39 (Show Source): You can put this solution on YOUR website!1 + remainder of 10
 Exponents/427640: Make S as a Subject of the formula? r=z(e^sw/kp-2) 1 solutions Answer 297405 by Alan3354(30993)   on 2011-03-27 11:49:00 (Show Source): You can put this solution on YOUR website!Is the exponent s ? or sw ? And is the denominator kp or kp-2? Add parentheses
 Evaluation_Word_Problems/427616: Deterine if there are integers whose square leave a remainder of 5 when divided by 91 solutions Answer 297373 by Alan3354(30993)   on 2011-03-27 09:04:45 (Show Source): You can put this solution on YOUR website!There aren't any.
 Age_Word_Problems/427627: How many years will it take \$3500 invested at 7% to earn \$735?1 solutions Answer 297372 by Alan3354(30993)   on 2011-03-27 09:04:09 (Show Source): You can put this solution on YOUR website!If it's simple interest (you didn't specify a compounding period), \$3500*0.07 = \$245 interest per year 735/245 = 3 years
 Polynomials-and-rational-expressions/427630: y-2/2y-1 +y-2/y-4 = 2 please show work.. i am confused about the simplifying stage. 1 solutions Answer 297370 by Alan3354(30993)   on 2011-03-27 09:01:35 (Show Source): You can put this solution on YOUR website!It's ambiguous, add parentheses. y-2/2y-1 +y-2/y-4 = 2 ---------- Is it (y-2)/(2y-1) ? or y - (2/2y - 1) ?
 expressions/427618: write down the coefficient of x in each of the following expressions: x+1 and 14-x1 solutions Answer 297364 by Alan3354(30993)   on 2011-03-27 08:20:47 (Show Source): You can put this solution on YOUR website!x+1 = 1x+1 --> 1 ----------- and 14-x = 14-1x --> -1
 Radicals/427625: What is 6/5+ the square root of 11?1 solutions Answer 297363 by Alan3354(30993)   on 2011-03-27 08:19:14 (Show Source): You can put this solution on YOUR website! =~ 0.7214465
 Evaluation_Word_Problems/427622: Write the equation of the cubic function f(x), if f(-2)=0, f(1)=0, f(3)=0 and f(6)=8 Please help. This is pre calc.1 solutions Answer 297362 by Alan3354(30993)   on 2011-03-27 08:01:58 (Show Source): You can put this solution on YOUR website!Write the equation of the cubic function f(x), if f(-2)=0, f(1)=0, f(3)=0 and f(6)=8 ------------- If the zeroes are a, b & c, then it's (x-a)*(x-b)*(x-c) --> f(x) = (x+2)*(x-1)*(x-3) f(6) = 120 tho, not 8 120/8 = 15 --> (1/15)*(x+2)*(x-1)*(x-3) Just multiply that
 Sequences-and-series/427617: how to determine if the number 5240365220553 is a square number1 solutions Answer 297359 by Alan3354(30993)   on 2011-03-27 07:55:00 (Show Source): You can put this solution on YOUR website!Square numbers end in 0, 1, 4, 5, 6 or 9. This is not one, its LS digit is 3.
 Linear-equations/427581: write the slope intercept equation for the line with slope -2/7 and y intercept (0,4) I have tried the formula (y2-y1)/(x2-x1), but the fraction is messing with me?1 solutions Answer 297339 by Alan3354(30993)   on 2011-03-26 23:32:54 (Show Source): You can put this solution on YOUR website!It's y = mx + b m = -2/7 b = 4 -------- y = (-2/7)x + 4
 Inequalities/427551: Can anyone tell me what the graph would look like to the following inequalities: (the scale of both the x axis and y axis is one unit) x >= -4 and y <= -4 Thank you in advance!! :)1 solutions Answer 297319 by Alan3354(30993)   on 2011-03-26 21:43:53 (Show Source): You can put this solution on YOUR website!dl the FREE graph software at http://www.padowan.dk ----------- Then you can see it. Use F6 to enter the relationship.
 Radicals/427541: Solve equation, check answer. √(3x+7)=3x+51 solutions Answer 297318 by Alan3354(30993)   on 2011-03-26 21:39:10 (Show Source): You can put this solution on YOUR website! Square both sides Just a quadratic, you can finish it
 Inequalities/427534: Can anyone help me with the following? One of the following points, (1, 1) (5, 2) (2, 4) maximizes the objective function z = -2x +5y, what is the maximum value of z? I originally said the answer was (2,4) and it was marked incorrect. So would it be 16? Thank you!1 solutions Answer 297291 by Alan3354(30993)   on 2011-03-26 20:00:45 (Show Source): You can put this solution on YOUR website!The max value of z using those 3 points is 16.
 Graphs/427468: write the equation of a circle with center (0,0) and radius 81 solutions Answer 297290 by Alan3354(30993)   on 2011-03-26 19:17:21 (Show Source):
 Travel_Word_Problems/427505: After robbing the ban in Yuma City, the Dalton brothers galloped away at 24km/h. Fifteen minutes later the posse left at 28 km/h. How long did it take the posse to overtake the Daltons?1 solutions Answer 297289 by Alan3354(30993)   on 2011-03-26 19:15:51 (Show Source): You can put this solution on YOUR website!After robbing the ban in Yuma City, the Dalton brothers galloped away at 24km/h. Fifteen minutes later the posse left at 28 km/h. How long did it take the posse to overtake the Daltons? ----------- In 15 mins, they were 6 km away (24 * 1/4) The posse gains on them at 4 km/hr (28 - 24) 6/4 = 1.5 hours
 Rectangles/427502: what are the dimensions of a rectangle if the perimeter is 42 cm and the area is 80 cm squared?1 solutions Answer 297282 by Alan3354(30993)   on 2011-03-26 18:17:24 (Show Source): You can put this solution on YOUR website!L + W = 42/2 = 21 so one of the numbers has to be odd. The only odd factors of 80 are 1 & 5. 1 by 20 doesn't work --> 5 by 16
 Matrices-and-determiminant/427497: i want to know how to check two given matrix similar or not please solve some example with your answer so i understand it 1 solutions Answer 297280 by Alan3354(30993)   on 2011-03-26 18:13:37 (Show Source): You can put this solution on YOUR website!You post an example, or look at examples in the solved problems.
 Trigonometry-basics/427299: hi I have a question concerning identitiy problems I need to prove that: Sec^6(x)(sec(x)tan(x)) - sec^4(x)(sec(x)tan(x)) = sec^5(x)tan^3(x) I wrote these in the order they occur in the book. I understand some write exponents as sec(x)^2. If you can help, it would be greatly appreciated. Also, if you could show the work it would help very much because I don't exactly understand how to do these. Thank you!1 solutions Answer 297184 by Alan3354(30993)   on 2011-03-26 11:34:45 (Show Source): You can put this solution on YOUR website!I need to prove that: Sec^6(x)(sec(x)tan(x)) - sec^4(x)(sec(x)tan(x)) = sec^5(x)tan^3(x) I need to prove that: Sec^6(x)(sec(x)tan(x)) - sec^5(x)tan^3(x) - sec^4(x)(sec(x)tan(x)) = 0 Sec^2(x)(sec(x)tan(x)) - sec(x)tan^3(x) - (sec(x)tan(x)) = 0 Sec^2(x)(sec(x)) - sec(x)tan^2(x) - (sec(x)) = 0 Sec^2(x) - tan^2(x) - 1 = 0 1 -sin^2(x) - cos^2(x) = 0 sin^2 + cos^2 = 1 ---------------------
 Expressions-with-variables/427316: EVALUATE THE FOLLOWING EXPRESSION, SUBSTITUTING 0.35 FOR M. 8.1-M 0.35-8.1 1 solutions Answer 297167 by Alan3354(30993)   on 2011-03-26 10:11:19 (Show Source): You can put this solution on YOUR website!8.1-M = 8.1 - 0.35 = 7.75
 Polynomials-and-rational-expressions/427313: simplify a. 6^2= b. 6^-2= c. (1/6)^2= d. (1/6)^-2= e. -6^2= f. (-6)^2=1 solutions Answer 297164 by Alan3354(30993)   on 2011-03-26 09:51:58 (Show Source): You can put this solution on YOUR website!simplify a. 6^2= b. c. (1/6)^2= d. (1/6)^-2= 6^2 e. -6^2= -36 f. (-6)^2= Use a calculator for the others, if necessary.