Which statement is correct? Twenty-nine seventh-grade students chose a sports activity.
Twenty-eight eighth-grade students chose a sports activity.
Twenty-four seventh-grade students chose a non-sports activity.
Thirty-nine eighth-grade students chose a non-sports activity.

The ninety

Step-by-step explanation:

Because it's right

answer: c i think

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: