Dominic owns a small business selling used books. He knows that in the last week 107 customers paid cash, 12 customers used a debit card,
and 15 customers used a credit card.
Based on these results, express the probability that the next customer
with a debit card as a percent to the nearest whole number.
will pay

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:

the answer is b

this is a good question! i'll do some research and come back when i have the answer!

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