Roberto buys a toy for $5.00. He then sells it for $4.60. Calculate his percentage loss.

8 percent loss

Step-by-step explanation:

x = 3 ± √(5+y)

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: