Chapter 1: Q20. (page 18)

Evaluate the expression when $x = 3, y = 4, and z = 5$
$20.0.25 (y + x)$

Short Answer

Expert verified

The value of expression is1.75.

Step by step solution

Step-1 – 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.

Step-2 – Substitute the values

To evaluate the expression $0.25 (y + x)$ , substitute 3 for x and 4 for y, and simplify further using the order of operations as shown below,

$\begin{matrix} 0.25 (y + x) = 0.25 (4 + 3) \\ = 0.25 (7) \end{matrix}$

Step-3 – Multiply the numbers

To simplify further, multiply the resulting numbers to get

$\begin{matrix} 0.25 (y + x) = 0.25 (4 + 3) \\ = 0.25 (7) \\ = 1.75 \end{matrix}$

So, the value of the expression is 1.75.

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Evaluate the expression when $x = 3, y = 4, and z = 5$
$20.0.25 (y + x)$

Short Answer

Step by step solution

Step-1 – Order of operations

Step-2 – Substitute the values

Step-3 – Multiply the numbers

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Evaluate the expression when x=3, y=4, andz=520.0.25(y+x)

Short Answer

Step by step solution

Step-1 – Order of operations

Step-2 – Substitute the values

Step-3 – Multiply the numbers

One App. One Place for Learning.

Most popular questions from this chapter

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Evaluate the expression when $x = 3, y = 4, and z = 5$
$20.0.25 (y + x)$