A student’s standardised mark on a class test was z = –1.7. The mean mark for the class is 55 and the standard
deviation is 2.85.
Their mark on the test was closest to
A. 49
B. 50
C. 53
D. 58
E. 60

Derricks dog sitting and darlene's dog sitting are competing for new business. the companies ran the ads shown.which dog sitting service is more economic to use if you need 5 hours of service? explain.

Abiologist is recording the loss of fish in a pond. he notes the number of fish, f, in the pond on june 1. on july 1 there were 63 fish in the pond, which is 52 fewer fish than were in the pond on june 1. which equation represents this situation? a. f – 52 = 63 b. f – 63 = 52 c. 63 – f = 52 d. f – 63 = –52

Which one ? is the answer and how to find this answer