document.write( "Question 1179673: There are various formulas for calculating ideal body weight. In each of the formulas in this exercise, W is ideal body weight in kilograms, and x is height in inches above 60 in.\r
\n" );
document.write( "\n" );
document.write( "Suppose one researcher gave the following formula for men:
\n" );
document.write( "W = 51 + 1.9x.
\n" );
document.write( " Suppose another researcher published a slightly different formula for men:
\n" );
document.write( "W = 55.2 + 1.44x.
\n" );
document.write( " At what height do both formulas give the same ideal body weight? Round to the nearest whole number. \n" );
document.write( "
Algebra.Com's Answer #850193 by CPhill(1959)![]() ![]() You can put this solution on YOUR website! Let's solve this problem step-by-step:\r \n" ); document.write( "\n" ); document.write( "**1. Set the Formulas Equal:**\r \n" ); document.write( "\n" ); document.write( "We want to find the height (x) where both formulas give the same ideal body weight (W). So we set the two formulas equal to each other:\r \n" ); document.write( "\n" ); document.write( "51 + 1.9x = 55.2 + 1.44x\r \n" ); document.write( "\n" ); document.write( "**2. Solve for x:**\r \n" ); document.write( "\n" ); document.write( "* Subtract 1.44x from both sides: \n" ); document.write( " 51 + 0.46x = 55.2\r \n" ); document.write( "\n" ); document.write( "* Subtract 51 from both sides: \n" ); document.write( " 0.46x = 4.2\r \n" ); document.write( "\n" ); document.write( "* Divide by 0.46: \n" ); document.write( " x = 4.2 / 0.46 \n" ); document.write( " x ≈ 9.13\r \n" ); document.write( "\n" ); document.write( "**3. Round to the Nearest Whole Number:**\r \n" ); document.write( "\n" ); document.write( "* x ≈ 9 inches\r \n" ); document.write( "\n" ); document.write( "**4. Calculate the Height in Total Inches:**\r \n" ); document.write( "\n" ); document.write( "* Remember that x is the height in inches above 60 inches. \n" ); document.write( "* Total height = 60 + x \n" ); document.write( "* Total height = 60 + 9 = 69 inches\r \n" ); document.write( "\n" ); document.write( "**Answer:**\r \n" ); document.write( "\n" ); document.write( "Both formulas give the same ideal body weight at a height of 69 inches. \n" ); document.write( " \n" ); document.write( " |