Matt spent 3/10 of his allowance on projects, 2/5 on snacks, and 2/3 of the remainder on books. What fraction of his allowance was spent on books

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.

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:

just keep asking questions until you have a better understanding.

step-by-step explanation:

yes.. it's proven to be 36.