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Chapter 1: Q42. (page 9)

Evaluate each expression if w=6,x=0.4,y=12,and z=-3

w-3x+y

Short Answer

Expert verified

Expression w-3x+y results into 5.3

Step by step solution

01

- Order for simplification 

To evaluate any expression involving more than one operation, follow the below order of operations:

  • First evaluate expressions inside grouping symbols like parentheses ( ) or brackets [ ].
  • Evaluate the exponents.
  • Perform Multiplication and division from left to right.
  • Perform addition and subtraction from left to right.
02

- Substitute given values

Substitute0.4 for x, 6 forw and12 fory into given expression

w-3x+y=6-30.4+12

03

- Simplify 6-30.4+12

To evaluate the value of the given expression, follow order of simplification

6鈭�30.4+12=6鈭�1.2+12=4.8+12=4.8+0.5=5.3

Thus, value of w鈭�3x+yis5.3

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