document.write( "Question 166306: Hello,
\n" );
document.write( "I am having a hard time solving this problem and iwas wondering if you can help me. #1 One side of a rectangle stage is 2 meters longer that the other. If the diagnonal is 10 meters then what is the lenghts of the sides.\r
\n" );
document.write( "\n" );
document.write( "#2. An angry constuction worker throws his wench downward from a height of 128 feet with am initial velocity of 32 feet per second. The height of he wrench above the ground after t seconds is given by S(t0 = 16^2-32t+ 128.
\n" );
document.write( "A. what is the height of the wrench after 1 second?
\n" );
document.write( "B. How long does it take for the wrench to reach the ground? \n" );
document.write( "
Algebra.Com's Answer #122577 by nerdybill(7384) You can put this solution on YOUR website! #1 One side of a rectangle stage is 2 meters longer that the other. If the diagnonal is 10 meters then what is the lenghts of the sides. \n" ); document.write( ". \n" ); document.write( "Let x = a side of rectangle \n" ); document.write( "then \n" ); document.write( "x+2 = other side of rectangle \n" ); document.write( ". \n" ); document.write( "Applying pythagorean's theorem: \n" ); document.write( "x^2 + (x+2)^2 = 10^2 \n" ); document.write( "x^2 + x^2+4x+4 = 100 \n" ); document.write( "2x^2 + 4x + 4 = 100 \n" ); document.write( "2x^2 + 4x - 96 = 0 \n" ); document.write( "x^2 + 2x - 48 = 0 \n" ); document.write( "Factoring the left: \n" ); document.write( "(x+8)(x-6) = 0 \n" ); document.write( "x = {-8, 6} \n" ); document.write( ". \n" ); document.write( "We can toss out negative solution since it won't make sense to have a negative length. \n" ); document.write( ". \n" ); document.write( "x = 6 meters \n" ); document.write( "x+2 = 8 meters \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "#2. An angry constuction worker throws his wench downward from a height of 128 feet with am initial velocity of 32 feet per second. The height of he wrench above the ground after t seconds is given by S(t0 = 16^2-32t+ 128. \n" ); document.write( "A. what is the height of the wrench after 1 second? \n" ); document.write( ". \n" ); document.write( "Plug in the given values into the provided equation of: \n" ); document.write( "S(t) = 16^2-32t+ 128 \n" ); document.write( "S(1) = 16^2-32(1)+ 128 \n" ); document.write( "S(1) = 256 -32 + 128 \n" ); document.write( "S(1) = 224 + 128 \n" ); document.write( "S(1) = 352 feet \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "B. How long does it take for the wrench to reach the ground? \n" ); document.write( "Set equation to zero and solve for t: \n" ); document.write( "S(t) = 16^2-32t+ 128 \n" ); document.write( "0 = 16^2-32t+ 128 \n" ); document.write( "0 = 256 -32t+ 128 \n" ); document.write( "0 = 384 -32t \n" ); document.write( "32t = 384 \n" ); document.write( "t = 12 seconds\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |