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Chapter 1: Q43. (page 9)

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

43.5x+2z

Short Answer

Expert verified

Expression 5x+2z results into -4

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

Substitute 0.4for x, and -3for zinto given expression

5x+2z=50.4+2-3

03

- Simplify 50.4+2-3

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

50.4+2鈭�3=2+鈭�6=鈭�4

Thus, value of 5x+2zis-4

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