document.write( "Question 73895: Evaluate the expressions if x = -2, y = 5, and z = -2: -5(-3y - 2z) \n" ); document.write( "
Algebra.Com's Answer #52894 by bucky(2189)![]() ![]() ![]() You can put this solution on YOUR website! Evaluate the function: \n" ); document.write( ". \n" ); document.write( "-5(-3y - 2z) \n" ); document.write( ". \n" ); document.write( "Given that x = -2 y = 5 z= -2 \n" ); document.write( ". \n" ); document.write( "For each of the letters in the function, plug in its corresponding value. When you do, \n" ); document.write( "the function becomes: \n" ); document.write( ". \n" ); document.write( "-5(-3(5) - 2(-2)) \n" ); document.write( ". \n" ); document.write( "Notice that there is no x term in the function so you don't do anything with the fact that \n" ); document.write( "x = -2. \n" ); document.write( ". \n" ); document.write( "Do the multiplications inside the parentheses first. -3(5) = -15 and -2(-2) = +2. \n" ); document.write( "Substitute those values to get: \n" ); document.write( ". \n" ); document.write( "-5(-15 + 4) \n" ); document.write( ". \n" ); document.write( "Add the -15 and +4 to get -11. Substitute this: \n" ); document.write( ". \n" ); document.write( "-5(-11) \n" ); document.write( ". \n" ); document.write( "Now multiply to get the answer of +55 \n" ); document.write( ". \n" ); document.write( "That's the answer to the problem. Hope that you follow this all the way through so that \n" ); document.write( "you get the idea of how to evaluate an expression when you are given the values for the \n" ); document.write( "variables in that expression. \n" ); document.write( " |