Which equations are true?
choose all answers that apply:

a. − x = −x + x + 0

b. − x = 0 + (−x)

c. none of the above

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22