It takes Ann, brad and chad two hours to paint a fence. When Ann works alone , she can paint the same fence in six hours. When brad works alone , he can paint the same fence in four hours. How long would it take for chad to paint the same fence on his own

it would take chad 8.1 hours to paint the fence on his own

Step-by-step explanation:

true

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: