The average age of Stokes County school board members over the last 40 years has been 51, but members have ranged from 30 to 73. Use the range rule
of thumb to estimate the standard deviation of the members' ages.

55

step-by-step explanation:

3/6   and 9/18

step-by-step explanation:

if i put something wrong your not gonna like it so rather not say nothing.

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: