If you write a fraction that is equivalent to 3/5 but has denominator 30, my number will be the sum of the numerator and the denominator of this fraction. What is my number?

Given:

The fraction is .

Denominator of equivalent fraction is 30.

To find:

The sum of numerator and the denominator of this fraction.

Solution:

We have,

To make denominator 30 multiply the numerator and denominator by 6.

Now, add numerator add denominator.

Therefore, the required number is 48.

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: