Which statement is true?
a. –16+23 = –17+10
b. 15+(–5) > 23+(–12)
c. 8+(–7) < –15+14
d. –12+(–11) > 5+(–29)

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?