Which of the following number lines represents the solution to -5m=10

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

How to simply and write the answer n a whole number

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?