Question

1.The average person takes about 30, 000 breaths per day. Express this numberas a single-digit integer times a power of 10.*Your answer

Answer 1

`\text{3 }\cdot10^4`

Step-by-step explanation

We want to express the number as a single-digit integer times a power of 10.

This means that we want to express the number in scientific notation.

The number is 30,000.

We know that the decimal point in 30,000 is located behind the last 0, that is:

30,000.

We will now move that decimal point so that it is at the back of the very first integer which is 3.

The number of times that the decimal point is moved will be the power of 10.

The decimal point is moved 4 times, so it becomes:

`30,000\text{ = 3 }\cdot10^4`

That is the answer.