Simplify -7 1/8 - 9 1/2

A. - 2 3/8
B. - 16 5/8
C. 16 5/8
D. 2 3/8

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)

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:

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative