The magnitude of a ra representation of a number as the product of a number that is greater than or equal to 1 but less than 10 and an integer power of 10eal number without regard to its sign.

A. Estimate

B. Integers

C. Scientific Notation

D. Standard Form

Step-by-step explanation:

Since the number in question is greater than or equal to 1 but less than

10, we can choose any number between 1 and 10, lets take 3 for example.

If we take the product of 3 and an integer power of 10 number without regard to its sign, this can be expressed mathematically as shown;

where the power of 10 is -5. Note that any  real number can be used as the power since we are not regarding the sign (Here we used -5). The expression formed according to the expression in question is a SCIENTIFIC NOTATION i.e gives us a scientific notation.

Scientific notation is a means by which we represent very large or small numbers that are difficult to represent using a decimal notation

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m