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Chapter 4: Q51. (page 158)

Find the value of each expression.
$- 2 - 8$

Short Answer

Expert verified

The value of $- 2 - 8$ is $- 10$ .

Step by step solution

01

– Description of step.

Write $- 8$ as $2 - 10$ into $- 2 - 8$ .

$- 2 + 2 - 10$

02

– Inverse property.

For any real number $a$ , $a + (- a) = 0 = (- a) + a$ .

03

– Apply inverse property.

Apply inverse property to the expression in step 1 and simplify.

$0 - 10 = - 10$

Therefore, the value of $- 2 - 8$ is $- 10$ .

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Most popular questions from this chapter

For exercises 30-32, use the following information. The Cookie Cutter Bakery records each type of cookie sold at three of their branch stores. Two days of sales are shown in the spreadsheets below.

31. Find the sum of the two days’ sales expressed as a matrix.

Determine whether each matrix product is defined. If so, state the dimensions of the product. $M_{4 \times 3} \cdot N_{4 \times 3}$

Determine whether each matrix product is defined. If so, state the dimensions of the product. $R_{1 \times 4} \cdot S_{4 \times 5}$

Find each product, if possible.

$[\begin{matrix} 7 & 3 \\ 0 & 2 \\ 5 & 5 \end{matrix}] \cdot [\begin{matrix} - 2 & 1 & 4 \\ 3 & - 5 & 2 \\ 4 & 3 & 1 \end{matrix}]$

Find each value if $f (x) = x^{2} - 3 x + 2$ .

$f (0)$

See all solutions

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