Astore increased its inventory of an item from 300 to 1200. what percent of the previous inventory is the new inventory?

300: 1200*100=

(300*100): 1200=

30000: 1200=25

increase in inventory=1200-300=90 percent=900/1200*100 =75%

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: