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 Geometry_Word_Problems/316753: the surface area of a right circular cylinder with a circular radius r and a height h is given by s= 2 pie r squared. explain why his is so. then find how much cardboard is needed to make a toilet paper tube if the tube is 4.5 inches long with a radius of 1 inch 1 solutions Answer 226795 by Fombitz(13828)   on 2010-06-23 11:08:06 (Show Source): You can put this solution on YOUR website!Imagine a cardboard tube. Cut the tube lengthwise and unroll it. The tube is now unrolled and flattened into a rectangle. The length of the rectangle is along the cut line, . The width of the rectangle is the circumference of the circle or . The area of the rectangle is Your surface area formula would only be correct if sq.in. or approximately, sq.in.
 Linear-equations/316880: How to write an equation in slope- interception form for a line psassing through each pair of points?1 solutions Answer 226794 by Fombitz(13828)   on 2010-06-23 10:53:05 (Show Source): You can put this solution on YOUR website!Use the points to calculate the slope. Then use either point (xp,yp), the slope , and the point-slope form of a line, Then convert to slope-intercept form,
 Average/316870: If a+b=7(c+d), what would be the average (arithmetic mean) of a, b, c and d?1 solutions Answer 226792 by Fombitz(13828)   on 2010-06-23 10:49:50 (Show Source):
 Equations/316876: Please help me with this. Find the distance between P and Q and the coordinates of the midpoint of the segment joining P and Q. P(2,7),Q(4,1)1 solutions Answer 226790 by Fombitz(13828)   on 2010-06-23 10:45:16 (Show Source): You can put this solution on YOUR website!Use the distance formula, . . . Use the midpoint formula, (,) . . .
 Equations/316879: Please help me with this question. Identify the vertex of the parabola. f(x)= (x-9) square + 101 solutions Answer 226788 by Fombitz(13828)   on 2010-06-23 10:42:59 (Show Source): You can put this solution on YOUR website!Compare to the general vertex form for a parabola with vertex (h,k): . . . (,)=(,)
 test/316877: Solve each system by the addition method. 2x+3y=18 5x-y=111 solutions Answer 226786 by Fombitz(13828)   on 2010-06-23 10:41:40 (Show Source): You can put this solution on YOUR website!1. 2. Multiply eq. 2 by (3) and add to eq. 1, Then use either equation to solve for y.
 Graphs/316872: Write the standard form (ax+by=c) of the equation of the line with the following conditions. 1. Through: (1,2) Slope; 7 What i have tried: i have tried to graph it. i used the slope. And after that i got lost, because i dont understand the question itself. HELP, please ?1 solutions Answer 226784 by Fombitz(13828)   on 2010-06-23 10:38:46 (Show Source): You can put this solution on YOUR website!Use the point slope form of the line,, then convert to standard form,
 Equations/316874: Please help me with this. Find the center and radius of the circle. x square - 4x + y square - 12y + 36=01 solutions Answer 226782 by Fombitz(13828)   on 2010-06-23 10:35:51 (Show Source): You can put this solution on YOUR website!Complete the square in x and y. Compare to the general equation for a circle centered at (h,k) with a radius R, . . . Center:(,) Radius:
 Equations/316786: Solve. Ann Cobb lives 20 miles due north of her favorite radio station. While driving due east from her house , she was able to keep the radio signal for 75 miles. What is the broadcasting range of her favorite radio station?1 solutions Answer 226780 by Fombitz(13828)   on 2010-06-23 10:33:36 (Show Source): You can put this solution on YOUR website!The 20 miles north from her house and the 75 miles east from her house are legs of a right triangle. The hypotenuse of the right triangle is the distance from the radio station and its range. Use the Pythagorean theorem, or approximately, miles
 Square-cubic-other-roots/316857: The problem is ... - the square root of 27 plus 6 times the square root of 3......i need this answer in the simplest radical form.1 solutions Answer 226777 by Fombitz(13828)   on 2010-06-23 10:28:32 (Show Source):
 Average/316869: if 5a+5b=45, what is the average(arithmetic mean) of a and b?1 solutions Answer 226776 by Fombitz(13828)   on 2010-06-23 10:27:22 (Show Source): You can put this solution on YOUR website! . . . The average of and is
 Probability-and-statistics/316826: Solve the following system of equations using the inverse matrix method. x+3y=6 x-2z=-1 3y+z=5 X= y= z=1 solutions Answer 226771 by Fombitz(13828)   on 2010-06-23 10:15:05 (Show Source): You can put this solution on YOUR website![A]= [x]= [b]= . . . det[A]= . . . [A]inv= . . [x]=
 Surface-area/316867: 1 solutions Answer 226770 by Fombitz(13828)   on 2010-06-23 10:09:42 (Show Source): You can put this solution on YOUR website!Please re-post.
 test/316859: Write the quadratic function in the form y = a(x - h)2 + k. Find the veertex, axis of symmetry, domain and range y = -2x^2 - 8x - 51 solutions Answer 226769 by Fombitz(13828)   on 2010-06-23 10:09:19 (Show Source): You can put this solution on YOUR website! The vertex of the parabola is (-2,3). The axis of symmetry is . The domain is unlimited: (,). Since the coefficient for is negative, the parabola opens downward, and the vertex is the maximum value. The range is (,). . . .
 Equations/316784: Solve. A 10 meter ladder is leaning against a building. The bottom of the ladder is 5 meters from the building. How many meters high is the top of the ladder?1 solutions Answer 226768 by Fombitz(13828)   on 2010-06-23 09:59:47 (Show Source): You can put this solution on YOUR website!The ladder, the distance from the ladder base to the building, and the distance from the ground to the ladder on the building form a right triangle. Use the Pythagorean theorem, or approximately, m
 test/316860: Determine whether there is a maximum or minimum value for the given function, and find that value. f(x) = x^2 + 8x + 131 solutions Answer 226766 by Fombitz(13828)   on 2010-06-23 09:54:55 (Show Source): You can put this solution on YOUR website!Convert to vertex form by completing the square, The minimum value occurs at the vertex. . . .