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Chapter 1: Q 526. (page 109)

Evaluate variable expressions with fractions.

r-sr+swhenr=10,s=鈭�5

Short Answer

Expert verified

The value of the given expression is 3.

Step by step solution

01

Step 1. Given information

Consider the expression.

r-sr+s
02

Step 2. Evaluate the expression when r=10, s=−5.

Substitute 10for rand -5for sinto the given expression.

r-sr+s=10-(-5)10+(-5)

Evaluate the numerator.

r-sr+s=1510+(-5)

Evaluate the denominator.

r-sr+s=155

03

Step 3. Simplify the expression.

r-sr+s=3

Hence, the value of the expression is 3.

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Most popular questions from this chapter

In the following exercises, evaluate the following expressions.

a2+b2whena=3,b=8

Translate the English phrase into an algebraic expression:

(a) the difference of two times x and 8,

(b) two times the difference of x and 8.

In the following exercises, translate the phrases into algebraic expressions.

the sum of 13x and 3x

In the following exercise, multiply:-1.3

Translate from algebra into English:

a)19鈮�15b)7=12鈭�5c)15梅3<8d)y+3>6
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