How do you evaluate #5x+2z# if w=6, x=0.4, y=1/2, z=-3?

1 Answer
Mar 14, 2017

Answer:

See the entire solution process below:

Explanation:

To evaluate the expression we need to substitute #color(red)(0.4)# for #color(red)(x)# and #color(blue)(-3)# for #color(blue)(z)# in the expression and then calculate the result. Variables #w# and #y# are not used and not necessary for this problem:

#5color(red)(x) + 2color(blue)(z)# becomes:

#(5 * color(red)(0.4)) + (2 * color(blue)(-3)) ->#

#2 + (-6) ->#

#2 - 6 ->#

#-4#