Chapter 1: Q. 1.72 (page 48)

Evaluate:
a) $|y|$ when $y = - 23$
b) $|- y|$ when $y = - 21$
c) $- |n|$ when $n = 37$
d) $- |q|$ when $q = - 49$

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

Part(a) Step 1. Given Information

We need to find $|y|$ when $y = - 23$

Part(a) Step 2, Calculation

Substitute $- 23$ for $y$

So,

localid="1654878029469" $y = |- 23| = 23$

Part(b) Step 1. Given Information

We need to find $|- y|$ when $y = - 21$

Part(b) Step 2. Calculation

Substitute $- 21$ for $y$

So,

$|- y| = |- (- 21| = |21| = 21$

Part(c) Step 1. Given Information

We need to find $- |n|$ when $n = 37$

Part(c) Step 2. Calculation

Substitute $37$ for $n$

So,

$- |n| = - |37| = - 37$

Part(d) Step 1. Given Information

We need to find $- |q|$ when $q = - 49$

Part(d) Step 2. Calculation

Substitute $- 49$ for $q$

So,

$- |q| = - |- 49| = - 49$

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Evaluate:
a) $|y|$ when $y = - 23$
b) $|- y|$ when $y = - 21$
c) $- |n|$ when $n = 37$
d) $- |q|$ when $q = - 49$

Short Answer

Step by step solution

Part(a) Step 1. Given Information

Part(a) Step 2, Calculation

Part(b) Step 1. Given Information

Part(b) Step 2. Calculation

Part(c) Step 1. Given Information

Part(c) Step 2. Calculation

Part(d) Step 1. Given Information

Part(d) Step 2. Calculation

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Evaluate:a) ywhen y=-23b) -ywhen y=-21c) -nwhen n=37d)-qwhenq=-49

Short Answer

Step by step solution

Part(a) Step 1. Given Information

Part(a) Step 2, Calculation

Part(b) Step 1. Given Information

Part(b) Step 2. Calculation

Part(c) Step 1. Given Information

Part(c) Step 2. Calculation

Part(d) Step 1. Given Information

Part(d) Step 2. Calculation

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Mechanics Maths

Statistics

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Decision Maths

Study anywhere. Anytime. Across all devices.

Evaluate:
a) $|y|$ when $y = - 23$
b) $|- y|$ when $y = - 21$
c) $- |n|$ when $n = 37$
d) $- |q|$ when $q = - 49$