If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation:

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

imma say 16%. sorry if its wrong. i'm doing the same stuff right now

step-by-step explanation:

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: