Chapter 1: Q. 14 (page 56)

Evaluate the expression when $r = 4 and s = 6$ .
$3.5 s + r$

Short Answer

Expert verified

The value of the expression is25.

Step by step solution

. Order of operations

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.

. Multiply from left to right

To evaluate the expression $3.5 s + r$ , substitute 4 for r and 6 for s in the expression and then simplify further using the order of operations as shown below,

$\begin{matrix} 3.5 s + r = 3.5 (6) + 4 \\ = 3.5 \cdot 6 + 4 \\ = 21 + 4 \end{matrix}$

. Add the numbers

Now to simplify further, add the numbers to get

$\begin{matrix} 3.5 s + r = 21 + 4 \\ = 25 \end{matrix}$

Thus, the value of the expression is 25.

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Evaluate the expression when $r = 4 and s = 6$ .
$3.5 s + r$

Short Answer

Step by step solution

. Order of operations

. Multiply from left to right

. Add the numbers

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Evaluate the expression when r=4 and s=6.3.5s+r

Short Answer

Step by step solution

. Order of operations

. Multiply from left to right

. Add the numbers

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Discrete Mathematics

Theoretical and Mathematical Physics

Statistics

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Mechanics Maths

Study anywhere. Anytime. Across all devices.

Evaluate the expression when $r = 4 and s = 6$ .
$3.5 s + r$