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Chapter 1: Q46. (page 9)

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

5wxz

Short Answer

Expert verified

Expression 5wxz results into -4

Step by step solution

01

- Order of 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 [ ] or fraction
  • Evaluate the exponents.
  • Perform Multiplication and division from left to right.
  • Perform addition and subtraction from left to right.
02

- Substitute given values

Substitute 6 for w, -3for zand 0.4forx into given expression

5wxz=5脳6脳0.4鈭�3

03

- Simplify 5×6×0.4-3

First multiply the terms of numerator and then divide it with denominator term as shown below

5脳6脳0.4鈭�3=12鈭�3=鈭�4

Thus, value of5wxzis -4

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Most popular questions from this chapter

Answer the question that was posed at the beginning of the lesson.

How are formulas used by nurses?

Include the following in your answer:

  • an explanation of why a formula for the flow rate of an IV is more useful than a table of specific IV flow rates, and
  • a description of the impact of using a formula, such as the one for IV flow rate, incorrectly.

Write an algebraic expression to represent each verbal expression.

The sum of 5 and three times a number

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12+10梅11-32

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