15+41=26? is this the correct answer?

your answer is correct because their diff and u should subtracts and u will kepp the sign of the larger number

Yes, in fact it is the correct answer.

the answer is ! ?

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: