Landscaper Liam has a triangular backyard with side lengths of 27 m, 21 m, and 18 m. His bag of fertilizer covers 400 m2. Determine if Liam has enough fertilizer to cover his backyard lawn. explanation please

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:

answer: c

step-by-step explanation

the five is the numerator