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2008-10-10 Math for Kids - Math: Hi Mindy, To solve this problem, it seems that we need to first find the volume of ONE 2"x2"x2" square block. The formula for volume is length x width x height. The volume, then, of one of the...
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2008-10-09 Algebra - algrebra!!!: multiply the 1st eq. by 3 to get 0.9x+2.4y = 10.8 multiply the 2nd eq. by 8 to get 5.6x+2.4y = -45.6 subtract the 1st from the 2nd to get 4.7x = -56.4 so x = -12 and then y = 9 multiply the 1st eq....
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2008-10-08 Geometry - Algebraic Perimeter: Hi Lonnie! Call the width of the rectangle x, and the length x+3. Knowing that the perimeter of a rectangle is found by multiplying the sum of both dimensions by 2, and that the perimeter is 78 are...
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2008-10-07 Geometry - Segment Addition Postulate (Twice): Hello Ciara, The diagram would look something like this (count the dashes, not the letters): A--M--B----C Because M is the midpoint of AB, that means that AB=MB+MA, and MA=MB=AB/2. By the second...
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2008-10-07 Basic Math - quadratics: Hi Nabeel, Generally speaking, we should use the quadratic formula x=[-b+sqrt(b*b-4ac)]/(2a),[-b-sqrt(b*b-4ac)]/(2a) only as our last resort. with the 1st expression, the first step we should take...
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