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# Recent problems solved by 'Alan3354'

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 Polynomials-and-rational-expressions/467785: How do you evaluate the polynomial -2x^3-3x+2 for x=-2? How do you factor a polynomial?1 solutions Answer 321027 by Alan3354(31514)   on 2011-07-06 22:40:19 (Show Source): You can put this solution on YOUR website!How do you evaluate the polynomial -2x^3-3x+2 for x=-2? Sub -2 for x f(-2) = -2(-2)^3 - 3(-2) + 2 = 16 + 6 + 2 = 24 ------- How do you factor a polynomial? The methods vary with the degree and other things. There's no short answer.
 logarithm/467805: Rewrite the following as a logarithmic equation: b small y=x 1 solutions Answer 321004 by Alan3354(31514)   on 2011-07-06 21:26:49 (Show Source):
 Percentage-and-ratio-word-problems/467774: in a theatre, the ratio of adults to childeren 11 to 8. if there are 152 people in the theatre, how many childeren are there?1 solutions Answer 320997 by Alan3354(31514)   on 2011-07-06 21:25:32 (Show Source): You can put this solution on YOUR website!11+8 = 19 152/19 = 8 --> 11*8 = 88 adults 8*8 = 64 children
 logarithm/467729: find the following expression as a single logarithm: log x + log 7 - log y 1 solutions Answer 320978 by Alan3354(31514)   on 2011-07-06 20:22:27 (Show Source): You can put this solution on YOUR website!log x + log 7 - log y = log(7x/y)
 Quadratic_Equations/467751: (2X=5)^2 = -41 solutions Answer 320974 by Alan3354(31514)   on 2011-07-06 20:10:33 (Show Source): You can put this solution on YOUR website!Too many equal signs.
 Exponential-and-logarithmic-functions/467765: how do i find 5 ^ SQRT OF 3 USING A SCINTIFIC CALCULATOR' 1 solutions Answer 320973 by Alan3354(31514)   on 2011-07-06 20:09:54 (Show Source): You can put this solution on YOUR website!Find sqrt(3) Raise 5 to that.
 logarithm/467734: Is this the correct answer find the value of x for: log base 5 125=x and the answer is x=5 1 solutions Answer 320972 by Alan3354(31514)   on 2011-07-06 20:09:13 (Show Source): You can put this solution on YOUR website!x is the exponent.
 Angles/467754: Hello I need help with a question. The directions are use an algebraic equation to find the measure of each angle that is represented in terms of x. 12x-3degrees 10x+15degrees the lines are parallel Thank you 1 solutions Answer 320971 by Alan3354(31514)   on 2011-07-06 20:06:52 (Show Source): You can put this solution on YOUR website!The angles are in relation to what? What lines?
 Inverses/467756: how can I learn algebra in a short time.? how can I learn algebra in a short time 1 solutions Answer 320970 by Alan3354(31514)   on 2011-07-06 20:05:46 (Show Source): You can put this solution on YOUR website!Start soon.
 Complex_Numbers/467772: add the complex expressions, then simplify. (1 - 3.5i) + (3.6 + 6.5i)1 solutions Answer 320968 by Alan3354(31514)   on 2011-07-06 20:03:50 (Show Source): You can put this solution on YOUR website!1 + 3.6 = 4.6 -3.5 + 6.5 = 3 --> 4.6 + 3i
 Equations/467703: the product of two consecutive even integers is 168 1 solutions Answer 320930 by Alan3354(31514)   on 2011-07-06 16:43:26 (Show Source): You can put this solution on YOUR website! = almost 13, the center --> 12 & 14
 Linear-equations/467706: I need help on how to write an equation of the line w/ slope of 2/3 that passes through (4,-5).1 solutions Answer 320928 by Alan3354(31514)   on 2011-07-06 16:37:58 (Show Source): You can put this solution on YOUR website!y = mx + b Use the point. Sub x & y to find b. -5 = (2/3)*4 + b -5 = 8/3 + b b = -23/3 ---------- y = (2/3)x - 23/3 Is that sufficient?
 test/467667: 2x-14 is what an equation or inequality ?1 solutions Answer 320920 by Alan3354(31514)   on 2011-07-06 16:20:33 (Show Source): You can put this solution on YOUR website!It's neither. An equation has an equal sign. An inequality has one of those signs. 2x-14 is a binomial.
 Trigonometry-basics/467680: (cot)/(csc-1)=(csc+1)/(cot) please prove this for me :)1 solutions Answer 320918 by Alan3354(31514)   on 2011-07-06 16:12:45 (Show Source): You can put this solution on YOUR website!(cot)/(csc-1)=(csc+1)/(cot) ------------- Change all to sines and cosines (cos/sin)/(1/sin - 1) = (1/sin + 1)/(cos/sin) (cos/sin)/((1 - sin)/sin) = ((1 + sin)/sin)/(cos/sin) cos/(1-sin) = (1 + sin)/cos Cross multiply cos^2 = 1 - sin^2 Pythagorean identity --------------- Always change to sines and cosines, unless you're familiar with other identities.
 Length-and-distance/467678: I am in need of help please I have a question that says 0.25mi to ft. using dimensional analysis to convert. thank you1 solutions Answer 320915 by Alan3354(31514)   on 2011-07-06 16:07:18 (Show Source): You can put this solution on YOUR website!1 mile = 5280 feet 0.25*5280 = 1320 feet
 Volume/467689: a circle with a diameter of 2.5" would be how many feet wide?1 solutions Answer 320913 by Alan3354(31514)   on 2011-07-06 16:04:42 (Show Source): You can put this solution on YOUR website!If 2.5" is 2.5 inches, it's 2.5/12 feet =~ 0.208 feet
 Linear-equations/467682: 2x+y=6 5x+4y=0 im not sure how to solve these questions among others1 solutions Answer 320912 by Alan3354(31514)   on 2011-07-06 16:03:36 (Show Source): You can put this solution on YOUR website!2x+y=6 5x+4y=0 ----------- There's more than one method. You can use substitution: 2x+y=6 --> y = 6-2x Sub for y in the 2nd eqn 5x + 4(6-2x) = 0 Solve for x. Then sub for x into either eqn and find y. --------------- Elimination works, too: 2x+y=6 times 4 --> 8x+4y = 24 ----------- 8x+4y = 24 5x+4y = 0 ----------- Subtract 3x = 24 x = 8 Then sub and find y.
 Linear-equations/467687: How do I write the equation of the line w/ slope 2/3 that passes through (4,-5)? I need to give the answer in slope intercept form. 1 solutions Answer 320910 by Alan3354(31514)   on 2011-07-06 15:59:24 (Show Source): You can put this solution on YOUR website!Use y = mx + b and the given point to find b. b is the y-intercept. You know the slope, it's 2/3
 Quadratic_Equations/467661: x^2+2x=3 Solve by graphing1 solutions Answer 320897 by Alan3354(31514)   on 2011-07-06 14:35:51 (Show Source): You can put this solution on YOUR website!dl the FREE graph software at http://www.padowan.dk -------------- x^2+2x=3 x^2 + 2x - 3 Use Insert
 Linear-equations/467664: How do I write the equation of the line w/ slope 2/3 that passes through (4,-5)? I need to give the answer in slope intercept form.1 solutions Answer 320895 by Alan3354(31514)   on 2011-07-06 14:34:07 (Show Source): You can put this solution on YOUR website!Use y = mx + b and the point to find b.
 Equations/467638: find three consecutive even integers whose sum is 1141 solutions Answer 320878 by Alan3354(31514)   on 2011-07-06 13:42:01 (Show Source): You can put this solution on YOUR website!114/3 = 38, the middle number ----------- You can do it like this: (n-2) + n + (n+2) = 114 3n = 114, etc
 Square-cubic-other-roots/467630: Simplify; express in terms of i. Please show all work. √-361 solutions Answer 320877 by Alan3354(31514)   on 2011-07-06 13:31:55 (Show Source): You can put this solution on YOUR website! = -6i, 6i
 Reduction-of-unit-multipliers/467578: 1. what is 2/3=m/42 2. 6.3=0.9y y= 3. 6= z/5.9 z=1 solutions Answer 320851 by Alan3354(31514)   on 2011-07-06 11:37:33 (Show Source): You can put this solution on YOUR website!1. what is 2/3=m/42 It's an equation in m. ------------------ 2. 6.3=0.9y y = 6.3/0.9 You can divide that easily and get y = 7 Sometimes it's better to eliminate fractions first. 6.3=0.9y Multiply by 10 63 = 9y y = 63/9 y = 7 -------------- 3. 6= z/5.9 Multiply by 5.9 z = 6*5.9 z = 35.4
 Radicals/467589: Simplify by taking roots of the numerator and the denominator 3v 1000/729 the v is represents a square root and the 3 is suppose to be in the indentation outside the square root, not directly to the side. this is a fraction inside the square root. 1 solutions Answer 320848 by Alan3354(31514)   on 2011-07-06 11:28:30 (Show Source): You can put this solution on YOUR website! If that's what you meant. ---------------- The other tutor slipped up, did the square root of the numerator. She could be in a different time zone and totally inebriated by now, we don't know.
 Radicals/467591: solve 3V 2x+7 +2=8 the v is suppose to be a square root and the 3 is suppose to be in the indentation of it, not directly to the side. The 2x and the 7 are the only numbers inside the square root. 1 solutions Answer 320847 by Alan3354(31514)   on 2011-07-06 11:26:47 (Show Source): You can put this solution on YOUR website!Then it's a cube root, not a square root. Cube both sides 2x + 7 = 216 2x = 209 x = 209/2
 Exponential-and-logarithmic-functions/467590: Can someone please help with this Use the change of base formula to write two equations that are equivalent to y = log[2]x 1 solutions Answer 320845 by Alan3354(31514)   on 2011-07-06 11:23:51 (Show Source): You can put this solution on YOUR website! That is the base change formula.
 Linear-equations/467587: Please help me find the slope intercept form of the line that passes through the given points: (3, -3) (-2, 5) 1 solutions Answer 320840 by Alan3354(31514)   on 2011-07-06 11:06:25 (Show Source): You can put this solution on YOUR website!Step 1, find the slope.
 Polynomials-and-rational-expressions/467575: 12y^2+4y+15y+51 solutions Answer 320839 by Alan3354(31514)   on 2011-07-06 11:05:03 (Show Source): You can put this solution on YOUR website!Do you have a question?
 Angles/467574: find X if angles of measures (X+10)° and (X-30)° are complementry to each other1 solutions Answer 320830 by Alan3354(31514)   on 2011-07-06 10:27:53 (Show Source): You can put this solution on YOUR website!then (x+10) + (x+30) = 90 2x + 40 = 90 2x = 50 x = 25
 Numbers_Word_Problems/467567: the numbers 2 and 3 are prime numbers and their sum 5 is also a prime number, fine five more such pairs of prime numbers1 solutions Answer 320829 by Alan3354(31514)   on 2011-07-06 10:13:59 (Show Source): You can put this solution on YOUR website!2 + 11 = 13 2 + 17 = 19 2 + 29 = 31 2 + 41 = 43 2 + 59 = 61 2 + 101 = 103 ------------- Notice that all have a 2, the only even prime number. Adding 2 odd numbers would give an even number, which could not be prime.