Edward had a lump of play doh that was 2 1/2 inches long. If he stretched it out to 3 times its current length how long would it be

the answer would be 7.5 inches long or 7 1/2 inches long

Step-by-step explanation:

2.5 multiplied by 3

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: