Chapter 1: Q. 1.43 (page 23)

Evaluate each of the following: $(1.4)$
a. $4 \times (- 8) =_$ .
b. $- 12 - 48 =_$ .
c.localid="1651763379682" $\frac{- 168}{- 4} =___$ .

Short Answer

Expert verified

a. The answer is $4 \times (- 8) = - 32$ .

b. The answer is $- 12 - 48 = - 60$ .

c. The answer is $\frac{- 168}{- 4} = 42$ .

Step by step solution

Part (a) step 1: Given Information

We need to evaluate $4 \times (- 8) =___$ .

Part (a) step 2: Calculation

Here, $4$ multiplied to $- 8$ .

When a positive sign multiplies to a negative sign then the result is a negative sign.

= 4 \times (- 8) = - 32

Part (b) step 1: Given Information

We need to evaluate $- 12 - 48 =___$ .

Part (b) step 2: Calculation

Now,

When two negative sign adds then the result comes in a negative sign.

$= - 12 - 48 = - 12 + (- 48) = - 60$

Part (c) step 1: Given Information

We need to evaluate $\frac{- 168}{- 4} =___$ .

Part (c) step 2: Calculation

Here,

When two negative signs are divided then the result comes in a positive sign.

$- 168$ divided by $- 4$

localid="1651764528622" $= \frac{- 168}{- 4} = \frac{168}{4} = 42$

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Evaluate each of the following: $(1.4)$
a. $4 \times (- 8) =_$ .
b. $- 12 - 48 =_$ .
c.localid="1651763379682" $\frac{- 168}{- 4} =___$ .

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

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Evaluate each of the following:1.4a.4×-8=___.b.-12-48=___.c.localid="1651763379682" -168-4=___.

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

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Chemical Reactions

Chemical Analysis

Inorganic Chemistry

The Earths Atmosphere

Making Measurements

Physical Chemistry

Study anywhere. Anytime. Across all devices.

Evaluate each of the following: $(1.4)$
a. $4 \times (- 8) =_$ .
b. $- 12 - 48 =_$ .
c.localid="1651763379682" $\frac{- 168}{- 4} =___$ .