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 Volume/480111: I have a cylinder with a 2.5 cm radius and a 6cm height . What is the total area of this cylinder?1 solutions Answer 328862 by Alan3354(30945)   on 2011-08-10 11:20:26 (Show Source): You can put this solution on YOUR website!I have a cylinder with a 2.5 cm radius and a 6cm height . What is the total area of this cylinder? ------------ Lateral area (the curved part) = 2*pi*r*h Top and bottom area = each
 Graphs/480085: i need help with graphing 6x-2y=01 solutions Answer 328861 by Alan3354(30945)   on 2011-08-10 11:17:50 (Show Source): You can put this solution on YOUR website!i need help with graphing 6x-2y=0 --------- y = 3x It's a straight line, so you need 2 points Pick 2 for x and find y. Plot the 2 points. Draw a line thru them.
 Systems-of-equations/480091: Find the slope-intercept form, standard form and point slope form of the equation of the line described A line with y-intercept of (0, -3) and x-intercept of (-5, 0)1 solutions Answer 328855 by Alan3354(30945)   on 2011-08-10 10:28:36 (Show Source): You can put this solution on YOUR website!Find the slope-intercept form, standard form and point slope form of the equation of the line described A line with y-intercept of (0, -3) and x-intercept of (-5, 0) ------------------ If the y-int is (0,A) and the x-int is (B,0), the eqn is Ax + By + AB = 0 ------------ -3x - 5y + 15 = 0 3x + 5y = 15 standard form ---------- y = (-3/5)x + 3 slope-intercept form -------------------------------- You can do it like this, too Find the slope, m = diffy/diffx = 3/-5 = -3/5 Use y = mx + b and either point to find b (we'll pretend we don't know it) -3 = (-3/5)*0 + b b = -3 --> y = (-3/5)x - 3 slope-int form 3x + 5y = 15
 Graphs/480074: find the slope if it exist y=-2.79x1 solutions Answer 328845 by Alan3354(30945)   on 2011-08-10 09:41:16 (Show Source): You can put this solution on YOUR website!m = -2.79
 Linear_Equations_And_Systems_Word_Problems/480060: Find the slope, if it exist, of the line containing the points (-1,1/2) and (-2,1/2).1 solutions Answer 328843 by Alan3354(30945)   on 2011-08-10 09:15:49 (Show Source): You can put this solution on YOUR website!There's on change in y, so slope = 0.
 Evaluation_Word_Problems/480031: The circle passes through the points (0,3),(2,4),(1,0). Find the equation of the circle 1 solutions Answer 328842 by Alan3354(30945)   on 2011-08-10 09:13:33 (Show Source): You can put this solution on YOUR website!One way to do this: Label the points, say A, B and C A(0,3) B(2,4) C(1,0) ----------- Find the perpendicular bisectors of AB and BC (any 2) Solve those 2 equations, the solution is the center of the circle, point P(x,y) ---------- Find the distance from P to A, B or C, that's the radius. --------- Then Px and Py are x & y of point P. ------------------- I prefer to use determinants, and I have an Excel sheet thst does them.
 Rectangles/480018: hi um i just want to no what is the area of a square which has a perimeter of 92 meters if you no it please may i have the answer thanx alot.1 solutions Answer 328839 by Alan3354(30945)   on 2011-08-10 08:57:29 (Show Source): You can put this solution on YOUR website!All 4 sides are equal length s = 92/4 -----------
 test/479922: A line passes through (1,-5) and (-3,7) write an equation for the line in point - slope form 1 solutions Answer 328808 by Alan3354(30945)   on 2011-08-09 22:43:19 (Show Source): You can put this solution on YOUR website!A line passes through (1,-5) and (-3,7) write an equation for the line in point - slope form ------------- m = diffy/diffx = 12/-4 m = -3 --------- y = mx + b Use either point -5 = -3 + b b = -2 --------- y = -3x - 2
 test/479959: The product of my 3 digit is 30. When you add my 1 digit and my 10 digit together the sum is my 100th digit. And my 1 digit is 3.1 solutions Answer 328806 by Alan3354(30945)   on 2011-08-09 22:39:05 (Show Source): You can put this solution on YOUR website!523
 Polynomials-and-rational-expressions/479942: Can you help me subtract 2x + 2w = 24 from -9 x + -2 w = -80 please thank you. 1 solutions Answer 328805 by Alan3354(30945)   on 2011-08-09 22:34:47 (Show Source): You can put this solution on YOUR website!-11x - 4w = -104
 Probability-and-statistics/479918: How many ways can you add three different even numbers to get a sum of 20? 1 solutions Answer 328804 by Alan3354(30945)   on 2011-08-09 22:33:38 (Show Source): You can put this solution on YOUR website!An infinite number. 4, 6 & 10 2, 6 & 12 0, 6 & 14 -10, 8 & 12 -20, 0, 40 -300, 12, 308 etc
 Rectangles/479967: what is the width of a rectangle with a perimeter of 70 feet if its lenght is 1 foot? 2 feet? l feet?1 solutions Answer 328803 by Alan3354(30945)   on 2011-08-09 22:29:20 (Show Source): You can put this solution on YOUR website!what is the width of a rectangle with a perimeter of 70 feet if its lenght is 1 foot? 34 feet --------- 2 feet? 33 feet ------- l feet? 35-L
 Inequalities/479903: how do you solve -6x=24?1 solutions Answer 328802 by Alan3354(30945)   on 2011-08-09 22:26:57 (Show Source): You can put this solution on YOUR website!Divide by -6
 Travel_Word_Problems/479894: if a car is going to 55mph how fast I must go to pass it whitin a 1/4 mile? show me the work.1 solutions Answer 328801 by Alan3354(30945)   on 2011-08-09 22:26:10 (Show Source): You can put this solution on YOUR website!How far ahead is it?
 test/479956: Your question goes here. Write clearly! We are not mind readers, so be sure to ask a question that we can understand.1 solutions Answer 328799 by Alan3354(30945)   on 2011-08-09 22:24:59 (Show Source):
 test/479963: Your question goes here. Write clearly! We are not mind readers, so be sure to ask a question that we can understand.1 solutions Answer 328798 by Alan3354(30945)   on 2011-08-09 22:24:42 (Show Source):
 Linear-systems/479829: i really need help on solving linear equations with elimination in non- standard form the equation is 2y=4x-16 5y=4x+8 Thanks for your help1 solutions Answer 328740 by Alan3354(30945)   on 2011-08-09 16:38:31 (Show Source): You can put this solution on YOUR website!2y=4x-16 5y=4x+8 ----------- Subtract -3y=-24 y = 8 ------ 5y=4x+8 5*8 = 4x + 8 4x + 8 = 40 x = 8 -------------- Form doesn't matter, just look for the most direct way to solve them.
 Mixture_Word_Problems/479810: 2m^3 of soil containing 35% sand was mixed into 6m^3 of soil containing 15% sand. What is the sand content of the mixture?1 solutions Answer 328737 by Alan3354(30945)   on 2011-08-09 16:20:27 (Show Source): You can put this solution on YOUR website!2m^3 of soil containing 35% sand was mixed into 6m^3 of soil containing 15% sand. What is the sand content of the mixture? -------------- 2*0.35 = 0.7 cm of sand 6*0.15 = 0.9 cm of sand -------------------- --> 1.6 m^3 of sand in 8 m^3 1.6/8 = 0.2 = 20% sand
 Evaluation_Word_Problems/479793: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -3x + 6y = -3 -6x + 4y = -10 1 solutions Answer 328732 by Alan3354(30945)   on 2011-08-09 15:59:02 (Show Source): You can put this solution on YOUR website!-3x + 6y = -3 -6x + 4y = -10 --------------- divide the 2nd eqn by 2, then subtract. Solve for y. Sub for y to solve for x. Show your work.
 Trigonometry-basics/479804: Factor the expresion and use the fundamental identities to simplify. cos^2x+cos^2xtan^2x1 solutions Answer 328731 by Alan3354(30945)   on 2011-08-09 15:54:45 (Show Source): You can put this solution on YOUR website!Hint: tan = sin/cos
 Linear-equations/479780: could you help me to solve the equation 6y−9=4x+9 for y? I found that it has more than one answer, but the website doesn't accept. Thank you.1 solutions Answer 328718 by Alan3354(30945)   on 2011-08-09 15:21:15 (Show Source): You can put this solution on YOUR website!6y - 9 = 4x + 9 6y = 4x + 18 y = (4x + 18)/6 = (2x + 9)/3 or y = (2/3)x + 3
 Surface-area/479658: Two round fountains are similar. One measures 7'2" across and the other measures 12'1" across. Find the scale factor from the small one to the large one. Thank you!1 solutions Answer 328716 by Alan3354(30945)   on 2011-08-09 15:18:25 (Show Source): You can put this solution on YOUR website!7'2 = 86 inches 12'1 = 145 inches --------------- The factor for the diameter = 86/145
 Travel_Word_Problems/479779: If I am drive 672 miles in 4 hours, what is my average spped? Can you please show formula?1 solutions Answer 328714 by Alan3354(30945)   on 2011-08-09 15:16:29 (Show Source): You can put this solution on YOUR website!d = r*t distance = rate * time ------------- 672 = r*4 r = 168 mi/hr
 Rate-of-work-word-problems/479775: paul can mow the grass in 50 minutes, but it takes Dan three timese longer. how long will it take them to mow the grass if they worked together?1 solutions Answer 328713 by Alan3354(30945)   on 2011-08-09 15:14:26 (Show Source): You can put this solution on YOUR website!paul can mow the grass in 50 minutes, but it takes Dan three timese longer. how long will it take them to mow the grass if they worked together? ------------------ Paul does 1/50 of the job per minute. 3 times longer is 150 minutes longer = 200 minutes Dan does 1/200 per minute. Together, they do 1/50 + 1/200 per minte = 1/40 per minute --> 40 minutes
 Rate-of-work-word-problems/479777: using one drain, a swimming pool can be emptied. using a different drain, the jov requires an hour and 15 minutes. how long will it take if both drains are opened?1 solutions Answer 328710 by Alan3354(30945)   on 2011-08-09 15:11:56 (Show Source): You can put this solution on YOUR website!Less than 1 hr 15 minutes, probably.
 Angles/479660: Find the approximate value of the volume of the right circular cone, 12cm x 10cm with a circular base shown below. Approximate your solution to the nearest hundredth1 solutions Answer 328708 by Alan3354(30945)   on 2011-08-09 15:07:19 (Show Source): You can put this solution on YOUR website!Nothing is shown. ------------ tho
 Numbers_Word_Problems/479717: Find the largest of three consecutive even integers whose sum is less than 1051 solutions Answer 328698 by Alan3354(30945)   on 2011-08-09 14:48:03 (Show Source): You can put this solution on YOUR website!The sum will be even, so it will be divisible by 6. The lowest x6 sum < 105 is 102. 102/3 = 34, the middle number --> 32, 34 & 36
 Geometry_Word_Problems/479655: A circular flower garden has a diameter of 18 ft. Around the garden there is a circular sidewalk which is 2 ft wide. What is the length around the outer edge of the sidewalk? (Hint: Make a drawing.)1 solutions Answer 328695 by Alan3354(30945)   on 2011-08-09 14:26:52 (Show Source): You can put this solution on YOUR website!Diameter of the walk = 18 + 2 + 2 (2 ft on each side)
 Angles/479755: In the circle below, angle a = 7x + 2 and angle b = 9x - 4. Find the value of x1 solutions Answer 328694 by Alan3354(30945)   on 2011-08-09 14:23:29 (Show Source): You can put this solution on YOUR website!No circle is shown.
 Trigonometry-basics/479756: Solve the multiple-angle equation sin x/2=-sqrt3/2 So far I have 2x=sin^-1-sqrt3/2 with the answer x=0.4331 solutions Answer 328693 by Alan3354(30945)   on 2011-08-09 14:19:13 (Show Source): You can put this solution on YOUR website! x/2 = 240, 300 degs or 4pi/3, 5pi/3 radians x = 8pi/3, 10pi/3 + 4*n*pi, n = 0,1,2,3...
 Finance/479707: i need help with algebra i want to learn can you help me?1 solutions Answer 328691 by Alan3354(30945)   on 2011-08-09 14:13:04 (Show Source): You can put this solution on YOUR website!Start by looking at the solved problems on this site. --------- Some of the tutors here do tutoring for pay, too, so repost your request with whether or not you expect to make payment for assistance.