Chapter 1: Q42. (page 9)

Evaluate each expression if $w = 6, x = 0.4, y = \frac{1}{2},$ and $z = - 3$
$w - 3 x + y$

Short Answer

Expert verified

Expression $w - 3 x + y$ results into $5.3$

Step by step solution

- 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.

- Substitute given values

Substitute $0.4$ for $x$ , 6 for $w$ and $\frac{1}{2}$ for $y$ into given expression

$w - 3 x + y = 6 - 3 (0.4) + \frac{1}{2}$

- Simplify 6-30.4+12

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

$\begin{matrix} 6 - 3 (0.4) + \frac{1}{2} = 6 - 1.2 + \frac{1}{2} \\ = 4.8 + \frac{1}{2} \\ = 4.8 + 0.5 \\ = 5.3 \end{matrix}$

Thus, value of $w - 3 x + y$ is $5.3$

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Evaluate each expression if $w = 6, x = 0.4, y = \frac{1}{2},$ and $z = - 3$
$w - 3 x + y$

Short Answer

Step by step solution

- Order for simplification

- Substitute given values

- Simplify 6-30.4+12

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

Short Answer

Step by step solution

- Order for simplification

- Substitute given values

- Simplify 6-30.4+12

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Theoretical and Mathematical Physics

Pure Maths

Discrete Mathematics

Statistics

Geometry

Decision Maths

Study anywhere. Anytime. Across all devices.

Evaluate each expression if $w = 6, x = 0.4, y = \frac{1}{2},$ and $z = - 3$
$w - 3 x + y$