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Recent problems solved by 'Alan3354'

Alan3354 answered: 30972 problems
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Surface-area/731258: Find the area of a triangle with a base length of 6.2 cm and a height of 11 cm. 1 solutions Answer 447051 by Alan3354(30992)   on 2013-03-27 18:51:09 (Show Source): You can put this solution on YOUR website! Find the area of a triangle with a base length of 6.2 cm and a height of 11 cm. ---------

test/731260: Factor: n^2+7n+10 1 solutions Answer 447050 by Alan3354(30992)   on 2013-03-27 18:50:22 (Show Source): You can put this solution on YOUR website! Factor: n^2+7n+10 ------------ 10 doesn't have many pairs of factors. Make an effort.

test/731262: Factor: n^2+n-56 1 solutions Answer 447049 by Alan3354(30992)   on 2013-03-27 18:49:34 (Show Source): You can put this solution on YOUR website! Factor: n^2+n-56 ------------- find a pair of factors of 56 that differ by 1.

Exponents/731267: simplify each expression : (-3/7) squared as you know they are written with 2 to the second power please HeELP!!! :) 1 solutions Answer 447048 by Alan3354(30992)   on 2013-03-27 18:48:31 (Show Source): You can put this solution on YOUR website! simplify each expression : (-3/7) squared --------- = (-3/7)*(-3/7) Multiply it.

test/730863: Solving equations containing radicals 1 solutions Answer 446922 by Alan3354(30992)   on 2013-03-26 20:05:18 (Show Source): You can put this solution on YOUR website! Solving equations containing radicals --------------- What about it?

Linear-equations/730901: Which hill would it be easiest to push a cart up,one with a slope of 1/2,1/6,3 or 5 1 solutions Answer 446908 by Alan3354(30992)   on 2013-03-26 19:02:39 (Show Source): You can put this solution on YOUR website! Which hill would it be easiest to push a cart up,one with a slope of 1/2,1/6,3 or 5 -------------- The smallest value.

logarithm/730882: Find log base 5 of 8 if log base 5 of 2 = 0.4307 and log base 5 of 3 = 0.6826 1 solutions Answer 446903 by Alan3354(30992)   on 2013-03-26 18:37:50 (Show Source): You can put this solution on YOUR website! Find log base 5 of 8 if log base 5 of 2 = 0.4307 and log base 5 of 3 = 0.6826 ----------- 8 = 2^3 --> log(8) = 3*log(2) to any consistent base

Miscellaneous_Word_Problems/730891: three chimes ring out in a time. The first chime rings every two second, the second chime every five seconds and the third every nine seconds. If all three chimes begin at the same point how long will it be until they all run simultaneously 1 solutions Answer 446901 by Alan3354(30992)   on 2013-03-26 18:36:29 (Show Source): You can put this solution on YOUR website! three chimes ring out in a time. The first chime rings every two second, the second chime every five seconds and the third every nine seconds. If all three chimes begin at the same point how long will it be until they all run simultaneously ------------------ The Least Common Multiple of 2, 5 & 9 2*5*9 = 90 seconds

Numeric_Fractions/730893: how would you write 51/17 as a whole number 1 solutions Answer 446899 by Alan3354(30992)   on 2013-03-26 18:35:10 (Show Source): You can put this solution on YOUR website! how would you write 51/17 as a whole number -------- 3

Linear-equations/730616: Find an equation for the line that passes through (0,-5) and is perpendicular to the graph of x+3y=4. Write in Slope-Intercept form: So far I have x+3y-3y-4=4-3y-4 x-4=-3y then divide each side by -3 -1x/3-(-4/3)=y or y=-1x/3+3/4 -5=-1(0)/3+3/4 it gets mixed up from here, am I even doing this correctly? Thanks 1 solutions Answer 446758 by Alan3354(30992)   on 2013-03-26 07:06:30 (Show Source): You can put this solution on YOUR website! Find an equation for the line that passes through (0,-5) and is perpendicular to the graph of x+3y=4. Write in Slope-Intercept form: ---------------- Find the slope of the line. x+3y=4 Solve for y y = (-1/3)x + 4/3 The slope = -1/3 The slope of lines perpendicular is the negative inverse = 3 ----------- (0,-5) is b, the y-intercept --> y = 3x - 5

test/730479: Y=4x+-3 1 solutions Answer 446703 by Alan3354(30992)   on 2013-03-25 20:31:06 (Show Source): You can put this solution on YOUR website! Y=4x+-3 ---------- Plus or minus 3? Do you have a question?

test/730478: How do you solve dividing monomials? 1 solutions Answer 446700 by Alan3354(30992)   on 2013-03-25 20:22:28 (Show Source): You can put this solution on YOUR website! How do you solve dividing monomials? ------------- Equations are solved. Monomials are not solved, dividing or otherwise.

Polynomials-and-rational-expressions/730496: what is the answer and work to to the question 9d^2-6d+1 1 solutions Answer 446698 by Alan3354(30992)   on 2013-03-25 20:20:54 (Show Source): You can put this solution on YOUR website! what is the answer and work to to the question 9d^2-6d+1 --------------- How is 9d^2 - 6d + 1 a question? It's a trinomial.

test/730480: Y=4x+-3 show work 1 solutions Answer 446690 by Alan3354(30992)   on 2013-03-25 19:35:44 (Show Source): You can put this solution on YOUR website! Y=4x+-3 show work -------------- Work doing what?

test/730487: 7 1/4 times 9 1/4 1 solutions Answer 446689 by Alan3354(30992)   on 2013-03-25 19:34:27 (Show Source): You can put this solution on YOUR website! 7 1/4 times 9 1/4 ------------ = (29/4)*(37/4)

test/730486: 7 1/4 times 9 1/4 1 solutions Answer 446688 by Alan3354(30992)   on 2013-03-25 19:33:40 (Show Source): You can put this solution on YOUR website! 7 1/4 times 9 1/4 ------------ = (29/4)*(37/4)

test/730488: 7 1/4 times 9 1/4 1 solutions Answer 446687 by Alan3354(30992)   on 2013-03-25 19:32:51 (Show Source): You can put this solution on YOUR website! 7 1/4 times 9 1/4 ------------ = (29/4)*(37/4)

test/730489: 7 1/4 times 9 1/4 1 solutions Answer 446686 by Alan3354(30992)   on 2013-03-25 19:31:19 (Show Source): You can put this solution on YOUR website! 7 1/4 times 9 1/4 ------------ = (29/4)*(37/4)

Exponents/730105: (9a)^-2 1 solutions Answer 446496 by Alan3354(30992)   on 2013-03-24 22:03:33 (Show Source): You can put this solution on YOUR website! (9a)^-2 ------------- Do you have a question?

Functions/730114: Solving for x. I think the answer is negative one, but I don't know how to solve it showing my work. X+6= 5/(x-6) 1 solutions Answer 446482 by Alan3354(30992)   on 2013-03-24 21:34:54 (Show Source): You can put this solution on YOUR website! Solving for x. I think the answer is negative one, but I don't know how to solve it showing my work. -------------- Why do you think it's -1?

Signed-numbers/730116: find how long it takes a person to drive 135 miles if she drives on cruise control set at 60 mph. 1 solutions Answer 446480 by Alan3354(30992)   on 2013-03-24 21:32:52 (Show Source): You can put this solution on YOUR website! find how long it takes a person to drive 135 miles if she drives on cruise control set at 60 mph. ----------- d = r*t t = d/r

Probability-and-statistics/730122: If you toss a fair coin 11 times, what is the probability of getting all heads? 1\1024? 1\2048? 1\4096? or 1\2? 1 solutions Answer 446479 by Alan3354(30992)   on 2013-03-24 21:32:05 (Show Source): You can put this solution on YOUR website! If you toss a fair coin 11 times, what is the probability of getting all heads? ----- = (1/2)^11

Graphs/730119: Can someone help me with this please??? Write the slope intercept form of the line that pass through point A(-5,9) and is perpendicular to the line with equation 2y-3x+5=0 1 solutions Answer 446478 by Alan3354(30992)   on 2013-03-24 21:30:10 (Show Source): You can put this solution on YOUR website! Write the slope intercept form of the line that pass through point A(-5,9) and is perpendicular to the line with equation 2y-3x+5=0 ------------- Find the slope of the line, m1 2y-3x+5=0 Put it into slope-intercept form (solve for y) y = (3/2)x - 5/2 m1 = 3/2 ------ The slope of lines perpendicular is the negative inverse = -2/3 m = -2/3 --- Use y = mx + b and the point to find b, the y-intercept 9 = (-2/3)*-5 + b b = 17/3 --> y = (-2/3)x + 17/3 is the equation

Parallelograms/730027: Find measures of ABCD A=2x+3 B=? C=4x-10 D=3x+7 1 solutions Answer 446475 by Alan3354(30992)   on 2013-03-24 21:14:22 (Show Source): You can put this solution on YOUR website! Find measures of ABCD A=2x+3 B=? C=4x-10 D=3x+7 ------------ How are they related?

Polynomials-and-rational-expressions/730108: help me to completely factor 5x^3+30x^2+5x+30 1 solutions Answer 446474 by Alan3354(30992)   on 2013-03-24 21:12:56 (Show Source): You can put this solution on YOUR website! help me to completely factor 5x^3+30x^2+5x+30 ---------------- Factor out the 5. Then try the factors of 6 --> 1, 2, 3 & 6, plus and minus

Travel_Word_Problems/730109: if one person travels 4 miles north and another travels 3 miles west how far apart are they? 1 solutions Answer 446472 by Alan3354(30992)   on 2013-03-24 21:11:41 (Show Source): You can put this solution on YOUR website! if one person travels 4 miles north and another travels 3 miles west how far apart are they? ----------------- If they started from the same place, N and W make a right triangle. Use Pythagoras.

Radicals/730091: A circular solar cell must deliver 18 watts of energy. If each square centimeter of the cell that is in the sunlight produces 0.01 watt of energy, how long must the radius of the cell be? Please help me, I'm having a head ache just looking at the question. If you can, please explain how to do the question. Thank you so much!! 1 solutions Answer 446461 by Alan3354(30992)   on 2013-03-24 20:43:07 (Show Source): You can put this solution on YOUR website! A circular solar cell must deliver 18 watts of energy. If each square centimeter of the cell that is in the sunlight produces 0.01 watt of energy, how long must the radius of the cell be? --------------- 18 W/0.01 W/sq cm = 1800 sq cms ---- A = pi*r^2 = 1800 cm r =~ 23.94 cm --------------- PS Watt is not a unit of energy, it's a unit of power. The solar cell's output is measured in watts, a measure of power. Joules are energy. 1 Watt*second = 1 Joule

Length-and-distance/730095: Write the equation of the line that passes through the points (6, 2) and (6, 10). 1 solutions Answer 446457 by Alan3354(30992)   on 2013-03-24 20:40:01 (Show Source): You can put this solution on YOUR website! Write the equation of the line that passes through the points (6, 2) and (6, 10). ---------- x is 6 in both points. --> x = 6

Functions/730086: 1. Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point. f(x) = x2 + 2x - 9 A) minimum; (-10,-1) B) maximum; (-1,-10) C) maximum; (-10,-1) D) minimum; (-1,-10) 2. Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point. f(x) = -x2 - 2x - 6 A) minimum; (-5,-1) B) minimum; (-1,-5) C) maximum; (-1,-5) D) maximum; (-5,-1) 3. Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point. f(x) = -3x2 + 6x A) maximum; (-1,-3) B) minimum; (1,3) C) minimum; (-1,-3) D) maximum; (1,3) 4. Find the degree of the polynomial function. f(x) = -2x + 7x2 A) 2 B) 7 C) -2 D) 1 5. Find the degree of the polynomial function. 3-x^4 ______ 3 f(x) = A) 3 B) 0 C) - D) 4 6. Find the degree of the polynomial function. f(x) = πx5 - 6x4 - 9 A) 1 B) 5 C) π D) 4 7. Find the degree of the polynomial function. f(x) = 5x - x6 + A) 5 B) 6 C) 1 D) -1 8. Find the degree of the polynomial function. g(x) = -7x3 + 9 A) 0 B) -7 C) 3 D) 4 9. Find the degree of the polynomial function. h(x) = -19x + 4 A) 1 B) 0 C) -19 D) 2 10. Find the degree of the polynomial function. 17x3 + 3x2 - 2x - 2y4 - 1 A) 17 B) 10 C) 3 D) 4 11. Find the degree of the polynomial function. f(x) = -14x3 + 9x2 - 2 A) 6 B) 9 C) 3 D) -14 12. Find the zeros of the polynomial function. f(x) = x3 + x2 - 42x A) x = - 7, x = 6 B) x = 0, x = 5, x = 6 C) x = 5, x = 6 D) x = 0, x = - 7, x = 6 13. Find the zeros of the polynomial function. f(x) = x3 + 3x2 - x - 3 A) x = - 3, x = 3 B) x = -1, x = 1, x = - 3 C) x = 9 D) x = 1, x = - 3, x = 3 14. Find the zeros of the polynomial function. f(x) = x3 - 6x2 + 9x A) x = 0, x = 3 B) x = 0, x = -3, x = 3 C) x = 1, x = 3 D) x = 0, x = -3 15. Find the zeros of the polynomial function. f(x) = x3 + 4x2 - 9x - 36 A) x = -3, x = 3 B) x = 4, x = -3, x = 3 C) x = -4, x = 9 D) x = -4, x = -3, x = 3 16. Find the zeros of the polynomial function. f(x) = 2(x + 2)(x - 4)4 A) x = 2, x = -4, x = 4 B) x = 2, x = 4 C) x = -2, x = 4 17. Find the vertical asymptotes, if any, of the graph of the rational function. g(x) = A) x = 0 and x = -3 B) x = 1 and x = -3 C) x = -3 D) no vertical asymptote 18. Find the vertical asymptotes, if any, of the graph of the rational function. f(x) = A) x = 0 and x = 1 B) x = 0 and x = -1 C) x = 1 D) no vertical asymptote 19. Find the vertical asymptotes, if any, of the graph of the rational function. f(x) = A) x = 4 B) x = -4 C) x = -4, x = 4 D) no vertical asymptote 20. Find the vertical asymptotes, if any, of the graph of the rational function. g(x) = A) x = 4, x = -4 B) x = 4 C) x = 4, x = -4, x = 0 D) no vertical asymptote 1 solutions Answer 446455 by Alan3354(30992)   on 2013-03-24 20:36:33 (Show Source): You can put this solution on YOUR website! 1. Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point. f(x) = x2 + 2x - 9 Coefficient of the x^2 term is +, --> a max The vertex is on the LOS, Line of Symmetry, which is x = -b/2a x = -2/2 x = -1 ----- Vertex at (-1,f(-1)) ===================== A) minimum; (-10,-1) B) maximum; (-1,-10) C) maximum; (-10,-1) D) minimum; (-1,-10) 2. Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point. f(x) = -x2 - 2x - 6 A) minimum; (-5,-1) B) minimum; (-1,-5) C) maximum; (-1,-5) D) maximum; (-5,-1) 3. Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point. f(x) = -3x2 + 6x A) maximum; (-1,-3) B) minimum; (1,3) C) minimum; (-1,-3) D) maximum; (1,3) 2 & 3 same as #1 ================= 4. Find the degree of the polynomial function. f(x) = -2x + 7x2 A) 2 B) 7 C) -2 D) 1 5. Find the degree of the polynomial function. 3-x^4 ______ 3 f(x) = A) 3 B) 0 C) - D) 4 6. Find the degree of the polynomial function. f(x) = πx5 - 6x4 - 9 A) 1 B) 5 C) π D) 4 7. Find the degree of the polynomial function. f(x) = 5x - x6 + A) 5 B) 6 C) 1 D) -1 8. Find the degree of the polynomial function. g(x) = -7x3 + 9 A) 0 B) -7 C) 3 D) 4 9. Find the degree of the polynomial function. h(x) = -19x + 4 A) 1 B) 0 C) -19 D) 2 10. Find the degree of the polynomial function. 17x3 + 3x2 - 2x - 2y4 - 1 A) 17 B) 10 C) 3 D) 4 11. Find the degree of the polynomial function. f(x) = -14x3 + 9x2 - 2 A) 6 B) 9 C) 3 D) -14 =============== Degree is the highest exponent of the variable. f(x) = -14x3 + 9x2 - 2 --> degree 3

Travel_Word_Problems/730077: a plane traveled 630 miles to toronto and back. the trip there was with the wind. it took 6 hours. the trip back was into the wind. the trip took 14 hours. what was the speed of the plane in still air? what was the speed of the wind? 1 solutions Answer 446446 by Alan3354(30992)   on 2013-03-24 20:08:43 (Show Source): You can put this solution on YOUR website! a plane traveled 630 miles to toronto and back. the trip there was with the wind. it took 6 hours. the trip back was into the wind. the trip took 14 hours. what was the speed of the plane in still air? what was the speed of the wind? -------------- Find the 2 groundspeeds. The plane's airspeed is the average of them. The windspeed is the difference between airspeed and groundspeed.

Triangles/730020: explain how you can use the length of the shorter leg of a 30,60,90 degrees triangle to find the lengths of the other two sides? 1 solutions Answer 446445 by Alan3354(30992)   on 2013-03-24 20:07:23 (Show Source): You can put this solution on YOUR website! explain how you can use the length of the shorter leg of a 30,60,90 degrees triangle to find the lengths of the other two sides? ----------------- sin(30) = 1/2 so the hypotenuse = 2 times the shorter leg ------ Then you can use Pythagoras (or sin(60)) to find the 3rd side