Evaluate the expression when m = 6.

5m - 9

21

Step-by-step explanation:

5m-9

M=6

5(6)-9

Use Order of Operations

PEMDAS

Multiply to reduce:

30-9

Subtract:

21

The answer is 21.

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: