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# Recent problems solved by 'Tatiana_Stebko'

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 Angles/468641: The angles of a triangle are in the ratio 1:6:8. I need help finding the measure of the smallest angle. Thank you!1 solutions Answer 321552 by Tatiana_Stebko(1326)   on 2011-07-09 13:41:03 (Show Source): You can put this solution on YOUR website!Let x is the coefficient of ratio Then the angels of a triangle are x, 6x, 8x degrees The sum of the angels of a triangle is 180 degrees degrees The smallest angle of the triangle is 12 degrees
 Radicals/468561: Divide. Then simplify by taking roots, if possible. 〖49〗^(5/2) The solution is___. (Simplify your answer. Type an integer or fraction.) 1 solutions Answer 321533 by Tatiana_Stebko(1326)   on 2011-07-09 11:54:15 (Show Source):
 Evaluation_Word_Problems/468567: A camera is priced at P15,000.00 subject to 10% and 5% trade discounts. Determine the: a. additional trade discount rate that would bring down the price further to P12,440.25 b. single equivalent rate of the three discount rates 1 solutions Answer 321520 by Tatiana_Stebko(1326)   on 2011-07-09 10:48:56 (Show Source): You can put this solution on YOUR website!P15,000.00 after 10% discount is 15,000.00*(100%-10%)/100%=15,000.00*0.9=13,500.00 P13,500.00 after 5% discount is 13,500.00*(100%-5%)/100%=13,500.00*0.95=12,825.00 a. additional trade discount rate that would bring down the price further to P12,440.25 100%-(12,440.25/12,825.00)*100%=3% b. single equivalent rate of the three discount rates 100%-(12,440.25/15,000.00)*100%=17.065%
 Radicals/468577: Find the following. root20:(-3)^20 Select the correct choice below and if necessary, fill in the answer box to complete your choice. A. root20:(-3)^20 = B. The root is not a real number. 1 solutions Answer 321519 by Tatiana_Stebko(1326)   on 2011-07-09 10:37:37 (Show Source):
 Expressions-with-variables/468461: I need help solving this with the variable x. 3/x-2 + 5/x+2 = -7x/x^2-4 The solution is x=___1 solutions Answer 321509 by Tatiana_Stebko(1326)   on 2011-07-09 05:39:42 (Show Source):
 Graphs/468477: what are the order pairs for y from these equations Y=2^2x {(-1, ) (0, ), (1, ), (2, ) y=(1/2)^x [(-3, ) , (-2, ) , (-1, ), (0, ), (1, , 2, ), (3, )}1 solutions Answer 321508 by Tatiana_Stebko(1326)   on 2011-07-09 05:33:43 (Show Source): You can put this solution on YOUR website! if x=-1 then Point (-1,0.25) if x=0 then Point (0,1) if x=1 then Point (1,4) if x=2 then Point (2,16) {(-1,0.25),(0,1),(1,4),(2,16)} . if x=-3 then Point (-3,8) if x=-2 then Point (-2,4) if x=-1 then Point (-1,2) if x=0 then Point (0,1) if x=1 then Point (1,0.5) if x=2 then Point (2,0.25) if x=3 then Point (3,0.125) {(-3,8),(-2,4),(-1,2),(0,1),(1,0.5),(2,0.25),(3,0.125)}
 Numbers_Word_Problems/468522: Two number differ by 10. The larger number is 6 less than twice the smaller number. Find the numbers.1 solutions Answer 321507 by Tatiana_Stebko(1326)   on 2011-07-09 05:14:09 (Show Source): You can put this solution on YOUR website!Let x is the smaller number Then 2x-6 is the larger number Differ between numbers is 10, so equation the smaller number the larger number Answer: 16 and 26
 Triangles/468523: The three sides of a triangle are 4,7,and 8. I need to find the largest side of a similar triangle whose shortest side is 51 solutions Answer 321505 by Tatiana_Stebko(1326)   on 2011-07-09 05:06:22 (Show Source): You can put this solution on YOUR website!The largest side of a triangle are 4,7,and 8 is 8 The coefficient of proportionality is Then the largest side of the similar triangle is Answer 10
 Rectangles/468545: The length of a rectangle is 8 more than the width. If the width is 5x-4, find the perimeter in terms of x.1 solutions Answer 321504 by Tatiana_Stebko(1326)   on 2011-07-09 05:00:06 (Show Source): You can put this solution on YOUR website!If the width of a rectangle is , then the length is The perimeter of a rectangle is , when l is length, w is width of a rectangle Answer: 20x
 Radicals/468544: Add. Simplify by collecting like radical terms, if possible. 16√180 + 5√125 The answer is _____. 1 solutions Answer 321503 by Tatiana_Stebko(1326)   on 2011-07-09 04:55:38 (Show Source):
 Rational-functions/468540: Use the laws of exponents to simplify. (10^(7)/(8))/(10^(5)/(8))= (Simplify your answer. Tupe exponentential notation with rational exponents.)1 solutions Answer 321502 by Tatiana_Stebko(1326)   on 2011-07-09 04:47:34 (Show Source):
 Radicals/468541: Find the following. Assume that x can represent any real number. Use absolute value notation when necessary. √(25x^2)= 1 solutions Answer 321501 by Tatiana_Stebko(1326)   on 2011-07-09 04:42:04 (Show Source):
 Exponential-and-logarithmic-functions/468456: find lim[x:3/2]2x^2-9x-18/2x-31 solutions Answer 321496 by Tatiana_Stebko(1326)   on 2011-07-09 03:52:01 (Show Source): You can put this solution on YOUR website!=infinity
 Probability-and-statistics/468534: I am begging a tutor to show me how to do these hard homework problems. The probability of winning is 0.45 every time you play a certain game. Suppose you play the game 10 times. 1. (1 point) Find the probability that you will win exactly 4 times. Round answer to three places after the decimal point. I used the formula Pr(x-k)= c(n,k) p^k x q^ (n-k) so... c(10,4) (.45)^4 x (.55)^(10-4)? 2. (1 point) Find the probability that you will win 2 or more times. Round answer to three places after the decimal point. c(10,2) x (.45)^2 x (.55)^(8)? 3. (1 point) Find the expected number of times you will win, and the standard deviation. Round both answers to three places after the decimal point. I dont even know how to set this one up... I think my biggest issue is understanding how to find k1 solutions Answer 321495 by Tatiana_Stebko(1326)   on 2011-07-09 03:22:36 (Show Source): You can put this solution on YOUR website!1. (1 point) Find the probability that you will win exactly 4 times. Round answer to three places after the decimal point. I used the formula Pr(x-k)= c(n,k) p^k x q^ (n-k) so... c(10,4) (.45)^4 x (.55)^(10-4) - CORRECT 2. (1 point) Find the probability that you will win 2 or more times. Round answer to three places after the decimal point. P(win 2 or more times)=P(2)+P(3)+P(4)+P(5)+P(6)+P(7)+P(8)+P(9)+P(10) The best way to solve this problem by opposite event P(win 2 or more times)=1-P(win less then 2) P(win less then 2)=P(0)+P(1) THEN P(win 2 or more times)=1-(P(0)+P(1)) P(win 2 or more times)=1-(c(10,0)(.45)^0*(.55)^(10-0)+c(10,1)(.45)^1*(.55)^(10-1)) 3.(1 point) Find the expected number of times you will win, and the standard deviation. Round both answers to three places after the decimal point. E(X)=np n=10, p=0.45 E(X)=10*0.45=4.5 the standard deviation
 test/468495: I am going to take my grad exam again Monday for the 3rd time. I do NOT know how to factor and that is mainly the test. I was wondering someone could please help me??? 1 solutions Answer 321494 by Tatiana_Stebko(1326)   on 2011-07-09 02:57:21 (Show Source): You can put this solution on YOUR website!Do you know problems that could be on your exam, if you have some of them, send them to me please stebko22@gmail.com, I can help you
 logarithm/468526: i have tried to solve this log2(8-6x)=5. i cant seem to figure out what i am doing wrong. i have tried this: 2^5=8-6x. and so i add 8 to both sides and i get 40=6x then i divide both sides by 6 and i 6.666666? please help... thankyou1 solutions Answer 321493 by Tatiana_Stebko(1326)   on 2011-07-09 02:33:12 (Show Source): You can put this solution on YOUR website! Subtract 8 from both sides of the equation Divide both sides by -6
 logarithm/468527: help!!!!! 4+5e^-5=9 i do not know where to start to solve this problem.1 solutions Answer 321491 by Tatiana_Stebko(1326)   on 2011-07-09 02:26:50 (Show Source): You can put this solution on YOUR website!??????Something wrong, this problem has no x??????????????
 Linear-equations/468529: Please help me with this algebra problem. Thanks in advance. Simplify and show all work please. 9c^3 + 7c - (3c^3 - 12 + c)1 solutions Answer 321490 by Tatiana_Stebko(1326)   on 2011-07-09 02:18:26 (Show Source):