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Chapter 1: Q. 1.72 (page 48)

Evaluate:

a) ywhen y=-23

b) -ywhen y=-21

c) -nwhen n=37

d)-qwhenq=-49

Short Answer

Expert verified

Part(a) The required answer is 23.

Part(b) The required answer is 21.

Part(c) The required answer is -37.

Part(d) The required answer is-49.

Step by step solution

01

Part(a) Step 1. Given Information

We need to findywheny=-23

02

Part(a)  Step 2, Calculation

Substitute -23for y

So,

localid="1654878029469" y=-23=23

03

Part(b) Step 1. Given Information

We need to find-ywheny=-21

04

Part(b) Step 2. Calculation

Substitute -21for y

So,

-y=-(-21=21=21

05

Part(c) Step 1. Given Information

We need to find-nwhenn=37

06

Part(c) Step 2. Calculation

Substitute 37for n

So,

-n=-37=-37

07

Part(d) Step 1. Given Information

We need to find-qwhenq=-49

08

Part(d) Step 2. Calculation

Substitute -49for q

So,

-q=--49=-49

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