If there are 7 thrill rides, 11 slow rides, and 4 water rides, how many different ways can you go on a ride from each category?

good job you smart son of a gun you are smarter that einstein. 7

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: