Usual form of `-4.8xx10^8` is

Options

A. `-4,80,00,00,000`
B. `-48,00,00,000`
C. `-0.000000048`
D. `-480`

Answer

To convert the scientific notation \(-4.8 \times 10^8\) into its usual form, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Scientific Notation**: The number \(-4.8 \times 10^8\) means that \(-4.8\) is multiplied by \(10\) raised to the power of \(8\). This indicates that we need to move the decimal point in \(-4.8\) to the right by \(8\) places.

2. **Move the Decimal Point**: Start with \(-4.8\). Moving the decimal point \(8\) places to the right:
- Move it \(1\) place: \(-48.0\) (1st place)
- Move it \(2\) places: \(-480.0\) (2nd place)
- Move it \(3\) places: \(-4800.0\) (3rd place)
- Move it \(4\) places: \(-48000.0\) (4th place)
- Move it \(5\) places: \(-480000.0\) (5th place)
- Move it \(6\) places: \(-4800000.0\) (6th place)
- Move it \(7\) places: \(-48000000.0\) (7th place)
- Move it \(8\) places: \(-480000000.0\) (8th place)

3. **Final Result**: After moving the decimal point \(8\) places to the right, we get \(-480000000\).

4. **Formatting the Number**: To make it easier to read, we can format the number by adding commas. The usual form of \(-480000000\) is:
- \(-480,000,000\)

### Final Answer:
The usual form of \(-4.8 \times 10^8\) is \(-480,000,000\).