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# Recent problems solved by 'Alan3354'

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 Linear-equations/319275: Determine the linear equation for coordinates, (0,1) and (5,4) on the coordinate plane. Express your solution in the ax+by=c format.1 solutions Answer 228749 by Alan3354(30993)   on 2010-07-03 06:40:55 (Show Source): You can put this solution on YOUR website!Determine the linear equation for coordinates, (0,1) and (5,4) on the coordinate plane. Express your solution in the ax+by=c format. ---------------------- Given 2 points example. Find the equation of the line thru the points (2,1) and (3,5) --------------------- This is a 2 step process. First find the slope of the line thru the points. slope, m = diffy/diffx m = (5-1)/(3-2) m = 4 --------- Now use y = mx + b with either point to find b, the y-intercept. y = mx + b 5 = 4*3 + b b = -7 ------- y = mx + b y = 4x - 7 is the line (slope-intercept format) 4x - y = 7 (standard format) ------------------------ Another approach using determinants: |x y 1| |2 1 1| = 0 |3 5 1| -------- x(1-5) - y(2-3) + 1(10-3) = 0 -4x + y + 7 = 0 y = 4x - 7 --------- For further assistance, or to check your work, email me via the thank you note or at Moral Loophole@aol.com
 Trigonometry-basics/319409: What is the reference angle and the exact function value of cos 585 degrees? 1 solutions Answer 228748 by Alan3354(30993)   on 2010-07-03 06:36:45 (Show Source): You can put this solution on YOUR website!585 = 225 + 360
 Functions/319396: Find an equation of the line satisfying the conditions given. Express your answers in standard form. Please explain. Parallel to 3x - y = -5 and passing through (-1, 0) 1 solutions Answer 228716 by Alan3354(30993)   on 2010-07-02 20:23:56 (Show Source): You can put this solution on YOUR website!A line and a point example. Write in standard form the eqation of a line that satisfies the given conditions. Perpendicular to 9x+3y=36, through (1,2) ----------------- Find the slope of the line. Do that by putting the equation in slope-intercept form, y = mx + b. That means solve for y. 9x+3y = 36 3y= - 9x + 36 y = -3x + 12 The slope, m = -3 ------------------ The slope of lines parallel is the same. The slope of lines perpendicular is the negative inverse, m = +1/3 ---------------- Use y = mx + b and the point (1,2) to find b. 2 = (1/3)*1 + b b = 5/3 The equation is y = (1/3)x + 5/3 (slope-intercept form) x - 3y = -5 (standard form) ------------------------ For further assistance, or to check your work, email me via the thank you note, or at Moral Loophole@aol.com
 Expressions-with-variables/319384: Need help with this please: Find an equivalent expression with the given denominator 7/q = ?/q*(2) The expression that is equivalent to 7/q is1 solutions Answer 228707 by Alan3354(30993)   on 2010-07-02 19:05:20 (Show Source): You can put this solution on YOUR website!What is "q*(2) ??
 expressions/319386: Need help please: Translate into an algebraic expression Four more than three times a number (use x as the variable)1 solutions Answer 228706 by Alan3354(30993)   on 2010-07-02 19:04:32 (Show Source): You can put this solution on YOUR website!3 times x is what? Add 4 to that. What is that? ---------------------------------------------------- An example: 5 more than 7 times a number. 7 times x = 7x Add 5, --> 7x + 5 ---------------------
 real-numbers/319380: Need help solving this problem: During a game, a person wins 450 points. What is the corresponding number for this sentence?1 solutions Answer 228705 by Alan3354(30993)   on 2010-07-02 18:56:47 (Show Source): You can put this solution on YOUR website!That makes no sense.
 Expressions-with-variables/319382: Need help with this please: What is the equivalent expression of mn1 solutions Answer 228704 by Alan3354(30993)   on 2010-07-02 18:55:34 (Show Source): You can put this solution on YOUR website!nm ------- Nevermind?
 Polynomials-and-rational-expressions/319207: How to subtract polynomials ??? Like this question 6x^2-2xy+3y^2 4x^2-xy - y^21 solutions Answer 228697 by Alan3354(30993)   on 2010-07-02 18:13:58 (Show Source): You can put this solution on YOUR website!How to subtract polynomials ??? Like this question 6x^2-2xy+3y^2 4x^2-xy - y^2 ----------------- Subtract like terms, x^2, xy, etc 2x^2-xy + 4y^2
 Rational-functions/319375: Find the LCD for the following rational expressions. -3 / x^2 - 2x + 1 2x / x^2 - 5x + 4 a)(x - 1) (x + 4) b)(x - 1)^2 (x - 4) c)(x - 1)^3 (x -4) d)( x - 1) (x - 4)1 solutions Answer 228696 by Alan3354(30993)   on 2010-07-02 18:10:36 (Show Source): You can put this solution on YOUR website!You do them. email your work via the Thank You note, or at Moral Loophole@aol.com to check it, or for help.
 Rational-functions/319354: divide and simplify. 1. c/h^2 / c^2/h^3 2. x^2-25/x / x-5/x+2 3. y^2-16/25y+100/ y-4/20 4. s^2+9s/s^2+4s-45/ s/s+51 solutions Answer 228694 by Alan3354(30993)   on 2010-07-02 18:10:18 (Show Source): You can put this solution on YOUR website!You do them. email your work via the Thank You note, or at Moral Loophole@aol.com to check it, or for help.
 Rational-functions/319358: find the lcm of 21x^3 and 63x^9 find the lcm of t^2-36 and t^2+7t+6 find the lcm of v^3+8v^2+16v, v^2-8v\ find the lcm of 9y^2+27y and 3y^2+12y+91 solutions Answer 228693 by Alan3354(30993)   on 2010-07-02 18:04:06 (Show Source): You can put this solution on YOUR website!You try them. Show your work. email it to me either via the Thank You note, or at moralloophole@aol.com ---------------- Tutoring is not the same as solving problems for you.
 Linear-equations/319372: Please help me! Graph 3y>12x+151 solutions Answer 228690 by Alan3354(30993)   on 2010-07-02 17:58:53 (Show Source): You can put this solution on YOUR website!What sort of help do you need? -------------- Hint: Graph 3y = 12x+15 then the graph of >, greater than, is up and to the right. Also, it's the same as y > 4x+5 --------------------- You can get FREE software to do these from http://www.padowan.dk.com -----------------
 Polynomials-and-rational-expressions/319297: Will someone please help me solve these problems Find the least common multiple of the two expressions: Simplify 3t^6x^8y^5 and 12x^3y^6 1 solutions Answer 228676 by Alan3354(30993)   on 2010-07-02 16:41:24 (Show Source): You can put this solution on YOUR website!Find the least common multiple of the two expressions: Simplify 3t^6x^8y^5 and 12x^3y^6 ------------------------- There are 3 variables, t, x and y. The 2nd term has no t, so that's out. The 1st term has x^8 and the 2nd has x^3, so x^3 is common. What's your opinion on the y? And on the 3 and the 12?
 Linear_Algebra/319363: i have tried these so many times and I just cannot get them please help! 9. Find f(2) for f(x) = x3  2x2 + 7x + 1. 1. 1 2. 6 3. 13 4. 29 10. Identify the factors of the polynomial x3 + x2  14x  24. 1. (x  2)(x + 2)(x + 6) 2. (x + 2)(x + 3)(x  4) 3. (x + 1)(x  3)(x + 8) 4. (x  1)(x + 4)(x + 6) 11. Identify all rational zeros of the polynomial function f(x) = x3 + 2x2  5x  6. 1. 1, 2, 3 2. 1, 2, 3 3. 1, 2, 3 4. 1, 2, 3 12. Identify all zeros of the polynomial function f(x) = x4  9x3 + 24x2  6x  40. 1. 2, 4, 1  i, 1 + i 2. 2, 4, 2  i, 2 + i 3. 1, 4, 2  i, 2 + i 4. 1, 4, 3  i, 3 + i 13. Find f(g(2)) if f(x) = 4x + 5 and g(x) = x2  1. 1. 8 2. 17 3. 12 4. 21 1 solutions Answer 228675 by Alan3354(30993)   on 2010-07-02 16:38:05 (Show Source): You can put this solution on YOUR website!i have tried these so many times and I just cannot get them please help! 9. Find f(2) for f(x) = x3  2x2 + 7x + 1. 1. 1 2. 6 3. 13 4. 29 ------------- What did you try, and what did you get?
 Linear-equations/319359: Please help me find the equation in which the line has a X-intercept of 5 and a slope of 31 solutions Answer 228674 by Alan3354(30993)   on 2010-07-02 16:37:19 (Show Source): You can put this solution on YOUR website!Use y = mx + b where m is the slope and b is the y-intercept, and the point. m = 3 and the point (5,0) Use y = mx + b and the point to find b 0 = 3*5 + b b = -15 --> y = 3x - 15
 Geometric_formulas/319347: Right triangle is 36cm. What is length of sides?1 solutions Answer 228672 by Alan3354(30993)   on 2010-07-02 16:24:45 (Show Source): You can put this solution on YOUR website!Not sufficient data.
 Surface-area/319334: The edge of a cube is increased by 50%. What is the ratio of its new surface area to its old?1 solutions Answer 228647 by Alan3354(30993)   on 2010-07-02 14:13:54 (Show Source): You can put this solution on YOUR website!The edge of a cube is increased by 50%. What is the ratio of its new surface area to its old? ------------------- Surface area (of any solid or plane figure) is a function of the square of its linear dimensions. 1.5*side ---> 1.5^2 * area = 2.25
 Equations/319186: How can I find out what kind of equation this is y=10x^2. Is there a formula where I can find out if it is linear, quadratic or exponential.1 solutions Answer 228532 by Alan3354(30993)   on 2010-07-01 20:02:20 (Show Source): You can put this solution on YOUR website!It's 2nd order, the highest exponent is 2. 2nd order is quadratic.
 Expressions-with-variables/319131: Simplify 343 2/31 solutions Answer 228481 by Alan3354(30993)   on 2010-07-01 18:04:00 (Show Source): You can put this solution on YOUR website!Simplified can be a matter of opinion.
 Volume/319148: How do I Find the volume of a cardboard box with a length of 3 feet, width of 18 inches, and height of 12 inches. 1 solutions Answer 228479 by Alan3354(30993)   on 2010-07-01 18:02:01 (Show Source): You can put this solution on YOUR website!You get all 3 dimensions in the same units, the multiply them.
 Volume/319153: how do I Find Find the volume of a cone with radius 5 cm and height 6 cm (round to the nearest tenth of a cm3)? 1 solutions Answer 228478 by Alan3354(30993)   on 2010-07-01 18:00:59 (Show Source):
 Volume/319154: how do I Find Find the volume of a sphere with radius 6 inches (round to the nearest tenth of an in3). 1 solutions Answer 228477 by Alan3354(30993)   on 2010-07-01 18:00:23 (Show Source):
 Inverses/318894: 4x-3y = -10 5x-4=-13 Solve the system of equation 1 solutions Answer 228314 by Alan3354(30993)   on 2010-06-30 20:23:10 (Show Source): You can put this solution on YOUR website!4x-3y = -10 5x-4=-13 --> 5x = -9 x = -9/5 ---------- 4*(-9/5) - 3y = -10 -3y = -10 + 36/5 = -2.8 y = 14/15
 real-numbers/318915: 5+x=x+5 (7+y)+3=7+(y+3) 0+a=a1 solutions Answer 228307 by Alan3354(30993)   on 2010-06-30 20:05:37 (Show Source): You can put this solution on YOUR website!Do you have a question?
 Rational-functions/318890: 3 over x equals x over 12. Or 3/x = x/12. Solve this Rational Eqauation.1 solutions Answer 228280 by Alan3354(30993)   on 2010-06-30 18:24:40 (Show Source): You can put this solution on YOUR website!3/x = x/12 Cross multiply, or multiply extremes and means. Same thing. x = ± 6
 Polygons/318873: find the area of a regular hexagon with a 48inch permiter!1 solutions Answer 228278 by Alan3354(30993)   on 2010-06-30 18:20:14 (Show Source): You can put this solution on YOUR website!A hexagon is 6 equilateral triangles. The sides of the triangles are 8 inches (48/6). The base of each triangle is 8. The height is The area of each triangle is b*h/2 = All 6 triangles have an area of sq inches. --------------------
 Linear_Equations_And_Systems_Word_Problems/318850: A linear equation in three variables would end up with what figure? 1 solutions Answer 228228 by Alan3354(30993)   on 2010-06-30 13:57:01 (Show Source): You can put this solution on YOUR website!A plane in 3-space.
 Trigonometry-basics/318548: The escape velocity v a spacecraft needs to leave the gravitational field of a planet varies directly as the square root of the product of the planets radius R and its acceleration due to gravity g. For Mars and Earth: Find for Mars if the escape velocity for earth, 1 solutions Answer 228129 by Alan3354(30993)   on 2010-06-29 21:33:59 (Show Source): You can put this solution on YOUR website!There's no data given.
 Systems-of-equations/318528: Will somebody please help me solve these problems? 1. 64u^6-64U^5-20u^4 1 solutions Answer 228128 by Alan3354(30993)   on 2010-06-29 21:33:07 (Show Source): You can put this solution on YOUR website!There's nothing to solve. Equations are solved, this is not an equation.
 Polynomials-and-rational-expressions/318677: when my teacher gives me a test question and says Factor to 64xy-112xy-144xy I get confused as to what to do, because there are so many formulas to follow can you help 1 solutions Answer 228119 by Alan3354(30993)   on 2010-06-29 20:59:45 (Show Source): You can put this solution on YOUR website!Factor to 64xy-112xy-144xy ------------------ I don't know of any formulas. 64xy-112xy-144xy There's nothing to factor, just add them. = 64xy - 256xy = -192xy
 Polynomials-and-rational-expressions/318680: How do I solve this? I am having a very hard time. w^2-2w-351 solutions Answer 228118 by Alan3354(30993)   on 2010-06-29 20:57:53 (Show Source): You can put this solution on YOUR website!There's nothing to solve. Equations are solved, this is not an equation.