your answer would be A. I would hope this is right
Answer:
D 40,000nm
Step-by-step explanation: 1nm/10^-9m * 10^-6/1um = 10^3 nm/um
Therefore in 40 microns there are:
40um * 10^3 nm/um = 40 * 10^3 nm = 40,000 nm
Answer:
z = 2.6
Step-by-step explanation:
<u>Use the formula for z-score</u>

This tells us that this person's score of 210 places them 2.6 standard deviations above the mean