What is 27 kg 547 g + 694 g

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?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?