Order the steps and justifications in solving the system of linear equations. Equation 1: -2x+y=7
Equation 2:2x+y=-9

I have a few minutes

eqaution 1: Proportinal

eqaution 2:Proportinal

Step-by-step explanation:

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: