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Chapter 1: Q. 1.92 (page 66)

Multiply:(a)-8.7(b)-6(-9)(c)7(-4)(d)3.13

Short Answer

Expert verified

The solutions of (a), (b), (c) and (d) are-56,54,-28and39respectively.

Step by step solution

01

Part (a) Step 1. Given information

Multiply:-8.7

02

Part (a) Step 2. Calculation

We have,

-8.7=-56

The signs are different so the product is negative.

03

Part (b) Step 1. Given information

Multiply:-6(-9)

04

Part (b) Step 2. Calculation

We have,

-6(-9)=54

The signs are same so the product is positive.

05

Part (c) Step 1. Given information

Multiply:7(-4)

06

Part (c) Step 2. Calculation

We have,

7(-4)=-28

The signs are different so the product is negative.

07

Part (d) Step 1. Given information

Multiply:3.13

08

Part (d) Step 2. Calculation

We have,

3.13=39

The signs are same so the product is positive.

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