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Recent problems solved by 'Alan3354'

Alan3354 answered: 30973 problems
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Triangles/542202: THE TOTAL OF THE ANGLE MEASURES OF A ___________ IS ALWAYS 360 DEGREES? 1 solutions Answer 354485 by Alan3354(30993)   on 2011-12-05 20:03:36 (Show Source): You can put this solution on YOUR website! Several things.

Radicals/542199: What is the solution to 10=2^3sqrtx+123? 1 solutions Answer 354484 by Alan3354(30993)   on 2011-12-05 20:03:01 (Show Source): You can put this solution on YOUR website! x + 123 = 125 x = 2

Linear_Algebra/542204: What is the solution to 10=2^3sqrtx+123 1 solutions Answer 354483 by Alan3354(30993)   on 2011-12-05 20:02:42 (Show Source): You can put this solution on YOUR website! duplicate

Radicals/542200: What is the solution to 10=2^3sqrtx+123? 1 solutions Answer 354482 by Alan3354(30993)   on 2011-12-05 20:02:19 (Show Source): You can put this solution on YOUR website! duplicate

Points-lines-and-rays/542214: tell if the point (1,2) lies on the line y=2x+1 1 solutions Answer 354479 by Alan3354(30993)   on 2011-12-05 19:53:34 (Show Source): You can put this solution on YOUR website! tell if the point (1,2) lies on the line y=2x+1 ------- Sub 1 for x and 2 for y. See if they're equal.

Complex_Numbers/542216: i^12 1 solutions Answer 354478 by Alan3354(30993)   on 2011-12-05 19:52:43 (Show Source): You can put this solution on YOUR website!

Linear_Algebra/542205: What is the solution to 10=2^3sqrtx+123 1 solutions Answer 354477 by Alan3354(30993)   on 2011-12-05 19:47:59 (Show Source): You can put this solution on YOUR website! What is the solution to 10=2^3sqrtx+123 x = 12769/8

Triangles/542209: THE TOTAL OF THE ANGLE MEASURES OF A SQUARE IS ALWAYS 360 DEGREES 1 solutions Answer 354476 by Alan3354(30993)   on 2011-12-05 19:46:00 (Show Source): You can put this solution on YOUR website! Thx for letting us know.

logarithm/542146: Simplify the expression log(5)200 1 solutions Answer 354455 by Alan3354(30993)   on 2011-12-05 18:47:21 (Show Source): You can put this solution on YOUR website! is as simple as it gets.

Polygons/542144: The sum of the interior angles of a regular polygon is 1440 degrees, what is the measure of one exterior angle? 1 solutions Answer 354454 by Alan3354(30993)   on 2011-12-05 18:46:35 (Show Source): You can put this solution on YOUR website! n-2 = 1440/180 = 8 n = 10 sides Ext angles = 360/10 = 36 degs

Quadratic_Equations/542089: If I had a question like this: f(x)= 2(x-4)^2-2, what would I have to do with the 2 left of the parentheses? I understand how to do the rest, I had only forgotten what I was supposed to do with that. Please help =) 1 solutions Answer 354421 by Alan3354(30993)   on 2011-12-05 17:57:48 (Show Source): You can put this solution on YOUR website! If I had a question like this: f(x)= 2(x-4)^2-2, what would I have to do with the 2 left of the parentheses? ---------- The 2 is multiplied by (x-4)^2

Expressions-with-variables/542093: I'm sorry i did not include the problem it is y=3x-6 -3x+y=-6 1 solutions Answer 354419 by Alan3354(30993)   on 2011-12-05 17:56:10 (Show Source): You can put this solution on YOUR website! I'm sorry i did not include the problem it is y=3x-6 -3x+y=-6 --------- y=3x-6 -3x+y=-6 --> y = 3x - 6 ---------- It's the same equation 2 times. --> dependent, an infinite # of solutions, no unique solution.

Numbers_Word_Problems/542090: find two positive numbers whose sum is 42 and whose product is as large as possible 1 solutions Answer 354418 by Alan3354(30993)   on 2011-12-05 17:54:35 (Show Source): You can put this solution on YOUR website! The max product is 21*21 = 441, unless you mean without sign, then it could be 58*(-100) = -5800. It's a bigger number, but it's negative. Your choice.

Expressions-with-variables/542088: I am completly lost on this. Some of my problems are not coming out right. I am slmost to tears because i can not figure this out. 1 solutions Answer 354416 by Alan3354(30993)   on 2011-12-05 17:52:44 (Show Source): You can put this solution on YOUR website! You didn't provide much info.

Points-lines-and-rays/541971: For any line and point not on that line, how many lines can be drawn through the point that are parallel to the line?" 1 solutions Answer 354371 by Alan3354(30993)   on 2011-12-05 15:32:53 (Show Source): You can put this solution on YOUR website! 1

Quadratic-relations-and-conic-sections/541981: What is this equation graphed? (X-4)/16 + (y+2)^2/81=1 1 solutions Answer 354370 by Alan3354(30993)   on 2011-12-05 15:30:30 (Show Source): You can put this solution on YOUR website! What is this equation graphed? (X-4)/16 + (y+2)^2/81=1 ----------- If you mean (x-4)^2/16 the graph of the equation is an ellipse, if that's what you mean.

Quadratic_Equations/541980: what is x squared - 2x - 13= 0 1 solutions Answer 354368 by Alan3354(30993)   on 2011-12-05 15:29:25 (Show Source): You can put this solution on YOUR website! It's a quadratic, or 2nd order, equation in x.

Points-lines-and-rays/541977: How many planes can be drawn through any three noncollinear points? Why? A. 0 B. 1 C. 2 D. 3 1 solutions Answer 354367 by Alan3354(30993)   on 2011-12-05 15:28:10 (Show Source): You can put this solution on YOUR website! How many planes can be drawn through any three noncollinear points? Why? ------- 1 Because 3 points determine a plane.

Quadratic_Equations/541962: It's my very first time seeking help on this website because I am truly lost. The question from my book says that "the radicand of the quadratic formula, , can be used to determine whether has solutions that are rational, irrational, or not real numbers." I haven't been able to solve the problem on this website because it's saying that the first coefficient is zero. It's also asking me to explain how this works. And if it possible to determine the kinds of answers that one will obtain to a quadratic equation without actually solving the equation. I would greatly appreciate any help I can get. 1 solutions Answer 354365 by Alan3354(30993)   on 2011-12-05 15:23:30 (Show Source): You can put this solution on YOUR website! The question from my book says that "the radicand of the quadratic formula, , can be used to determine whether has solutions that are rational, irrational, or not real numbers." --------------- I just did this one. ------------ b^2 - 4ac is the determinant. If it's a perfect square and >0, there are 2 rational answers or roots. If it's a perfect square and =0, there are 2 rational answers or roots that are the same. If it's not a perfect square and >0, there are 2 irrational answers or roots. If it's <0, there are 2 complex answers or roots. ----------------- I don't know what you mean is "saying the first coefficient is zero", but if it is, if a = 0, then it's a linear equation, bx + c = 0

Polygons/541966: The measure of an interior angle of a regular polygon is 156; find the number of sides in the polygon. I think it is 15 because the corresponding angle is 24 degrees. Equation- 360/24=15. 1 solutions Answer 354361 by Alan3354(30993)   on 2011-12-05 15:13:12 (Show Source): You can put this solution on YOUR website! That's correct.

Probability-and-statistics/541942: Four letters make up the call letters of a radio station. The first letter must be a W or a K. Find the number of possible call letters starting with W or K and the other three letters may be any letters in alphabet. Letters may be repeated. 1 solutions Answer 354358 by Alan3354(30993)   on 2011-12-05 14:46:14 (Show Source): You can put this solution on YOUR website! = 2*26*26*26 ---------- Some stations have 3 letters, WSM, WBZ, WOR. With a few exceptions (KDKA in Pittsburgh), W is used for stations east of the Mississippi and K for the west side.

Rate-of-work-word-problems/541944: Two tanks, one with 2m diameter pipe and the other with two 1m diameter pipes which one epties faster? 1 solutions Answer 354357 by Alan3354(30993)   on 2011-12-05 14:43:16 (Show Source): You can put this solution on YOUR website! Two tanks, one with 2m diameter pipe and the other with two 1m diameter pipes which one epties faster? -------------- All other parameters being equal, the area of the 2 m pipe is 4 times the area of the 1 m pipe. ----------- The 2 m pipe has 2x the area of the two 1 m pipes, so 2x the flow rate if there are no other differences.

test/541950: Please help. I have to find the missing exponent for 13 to the 5th power divided by 13 and the exponent is blank but it =1. Please help me under stand how that is and how that answer is posible. Thank you sooo much 1 solutions Answer 354356 by Alan3354(30993)   on 2011-12-05 14:40:20 (Show Source): You can put this solution on YOUR website! I have to find the missing exponent for 13 to the 5th power divided by 13 and the exponent is blank but it =1. ------ Maybe you mean this: If it = 1, the NUM and DEN are the same.

Quadratic_Equations/541946: It's my very first time seeking help on this website because I am truly lost. The question from my book says that "the radicand of the quadratic formula, b^2 - 4ac, can be used to determine whether has solutions that are rational, irrational, or not real numbers." I haven't been able to solve the problem on this website because it's saying that the first coefficient is zero. It's also asking me to explain how this works. And if it possible to determine the kinds of answers that one will obtain to a quadratic equation without actually solving the equation. I would greatly appreciate any help I can get. 1 solutions Answer 354352 by Alan3354(30993)   on 2011-12-05 14:27:57 (Show Source): You can put this solution on YOUR website! The question from my book says that "the radicand of the quadratic formula, b^2 - 4ac, can be used to determine whether has solutions that are rational, irrational, or not real numbers." I haven't been able to solve the problem on this website because it's saying that the first coefficient is zero. It's also asking me to explain how this works. And if it possible to determine the kinds of answers that one will obtain to a quadratic equation without actually solving the equation. --------------- I think you mean , not = a ------------------ The radicand is called the determinant. It's b^2 - 4ac If it's >0, you have 2 real answers. If it's =0, you have the same real root twice. If it's <0, you have 2 complex roots.

Miscellaneous_Word_Problems/541940: If x^100 = 2(x^50), what are both possible values of x^200? 1 solutions Answer 354349 by Alan3354(30993)   on 2011-12-05 14:19:20 (Show Source): You can put this solution on YOUR website! If x^100 = 2(x^50), what are both possible values of x^200? ------------ x^100 = 2(x^50) x^50 = 2 --> x^200 = 16 ------------ The other is x = 0 --> x^200 = 0

Average/541843: if i have a 81 in a class and my exam is worth 20% what do i need to make to keep my 80 1 solutions Answer 354312 by Alan3354(30993)   on 2011-12-05 11:24:45 (Show Source): You can put this solution on YOUR website! if i have a 81 in a class and my exam is worth 20% what do i need to make to keep my 80 ------------- You wanna keep 81? Or 80? The 81% is the average of 80%, or 4/5 of the grade Anyway, (81*4 + score)/5 = 80 324 + score = 400 score = 76% to average 80% overall 76% -------------- To maintain 81%, you have to make 81%

Human-and-algebraic-language/541836: Al Yazia has 24 meter of fence. she want to make the largest rectangular area possible for her rabbit to play in. What length should make each side of the rabbit pen? (Show all your work and explain how you find the largest area. queenex3000@hotmail.com 1 solutions Answer 354311 by Alan3354(30993)   on 2011-12-05 11:13:45 (Show Source): You can put this solution on YOUR website! Al Yazia has 24 meter of fence. she want to make the largest rectangular area possible for her rabbit to play in. What length should make each side of the rabbit pen? (Show all your work and explain how you find the largest area. ----------------- It's a square, 6 meters on a side = 36 sq meters. ------------ Perimeter = 2L + 2W = 24 L + W = 12 W = 12 - L ----------- Area = L*W = L*(12 - L) The coefficient of the L^2 is negative, so it's a maximum. Find the vertex of the parabola --------- Line of Symmetry = -b/2a = -12/-2 L = 6 The vertex is on the LOS, so L = 6 is the maximum. ------------- 6*6 = 36 5*7 = 35 4*8 = 32 Any other combination is less than 36.

Money_Word_Problems/541840: Suppose that you have a bank account with a balance of $5000 at the beginning of the year and $5100 at the end of the year. What is the APR (Annual Percentage Rate) on this account? 1 solutions Answer 354309 by Alan3354(30993)   on 2011-12-05 11:09:15 (Show Source): You can put this solution on YOUR website! Suppose that you have a bank account with a balance of $5000 at the beginning of the year and $5100 at the end of the year. What is the APR (Annual Percentage Rate) on this account? ------------ 100/5000 = 0.02 = 2% ---------

Volume/541838: What is 4.1cm to the nearest 10th of a cm 1 solutions Answer 354307 by Alan3354(30993)   on 2011-12-05 11:06:10 (Show Source): You can put this solution on YOUR website! 4.1 cm

Travel_Word_Problems/541833: A car travling along a highway at 65mph. Which point in the tires is moving at 65 mph? 1 solutions Answer 354302 by Alan3354(30993)   on 2011-12-05 10:50:47 (Show Source): You can put this solution on YOUR website! A car travling along a highway at 65mph. Which point in the tires is moving at 65 mph? ----------- Only the center, or the axle, moves at 65 mph constantly. All other points move at 65 mph + a sinusoid, but their average is 65 mi/hr

Travel_Word_Problems/541673: how long will it take to get to smithsonian washington d.c. from conroe tx going at 200 mph? 1 solutions Answer 354241 by Alan3354(30993)   on 2011-12-04 22:40:22 (Show Source): You can put this solution on YOUR website! How far is it? d = r*t t = d/200, d in miles, t in hours