document.write( "Question 170010: Please Help. Thank You.\r
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document.write( "Increasing cube. Each of the three sides of a cube with
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document.write( "sides of x centimeters is increased by a whole number of
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document.write( "centimeters. The new volume in cubic centimeters is
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document.write( "given by
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document.write( "V(X)= x^3 + 10x^2 + 31x + 30.\r
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document.write( "a) Find V(3).\r
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document.write( "b) If the new height is x + 2 centimeters, then what are the
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document.write( "new length and width?\r
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document.write( "c) Find the volume when x =3 by multiplying the length,
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document.write( "width, and height. \n" );
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Algebra.Com's Answer #125508 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Increasing cube. Each of the three sides of a cube with \n" ); document.write( "sides of x centimeters is increased by a whole number of \n" ); document.write( "centimeters. The new volume in cubic centimeters is \n" ); document.write( "given by \n" ); document.write( "V(X)= x^3 + 10x^2 + 31x + 30. \n" ); document.write( ": \n" ); document.write( "a) Find V(3). \n" ); document.write( ": \n" ); document.write( "V(3)= 3^3 + 10(3^2) + 31(3) + 30. \n" ); document.write( "V(3) = 27 + 90 + 93 + 30 \n" ); document.write( "V(x) = 240 cu/cm \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "b) If the new height is x + 2 centimeters, then what are the \n" ); document.write( "new length and width? \n" ); document.write( ": \n" ); document.write( "Divide x^3 + 10x^2 + 31x + 30 by (x+2); using synthetic division: \n" ); document.write( "......________________ \n" ); document.write( " -2 | 1 + 10 + 31 + 30 \n" ); document.write( ": \n" ); document.write( " you get: x^2 + 8x + 15 as length * width \n" ); document.write( "Factor this to get the length and the width \n" ); document.write( "(x + 5)(x + 3) \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "c) Find the volume when x = 3 by multiplying the length, width, and height \n" ); document.write( ": \n" ); document.write( "Just substitute 3 for x in (x+2), (x+5), (x+3) \n" ); document.write( ": \n" ); document.write( "Multiply these these values to find the volume \n" ); document.write( " \n" ); document.write( " |