Express the following numbers in the standard form :
0.0000079

Answer

To express the number 0.0000079 in standard form, we follow these steps:

### Step-by-Step Solution:

1. **Identify the Decimal Point**: The number 0.0000079 has its decimal point at the end of the number. We need to move the decimal point to the right until we have a number between 1 and 10.

**Hint**: Count how many places you move the decimal point to get a number between 1 and 10.

2. **Move the Decimal Point**: Move the decimal point to the right 6 places. This gives us the number 7.9.

**Hint**: Each move to the right decreases the exponent of 10.

3. **Express in Standard Form**: Since we moved the decimal point 6 places to the right, we express this as:
\[ 7.9 \times 10^{-6} \]

**Hint**: Remember that moving the decimal to the right means you use a negative exponent.

4. **Final Result**: The standard form of 0.0000079 is:
\[ 7.9 \times 10^{-6} \]

### Summary of the Solution:
The number 0.0000079 can be expressed in standard form as \( 7.9 \times 10^{-6} \).