Round 247,039 to the nearest thousand ?

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Nikolas calculated the volume of the prism. his work is shown below.