Write a system of equations to solve the sum of two numbers is 24 and their difference is 2.

Step-by-step explanation:

x + y = 24

x - y = 2

Add the equations together to eliminate the y terms.

2x = 26

x = 13

y = 11

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: