Answer:
64 is the perfect square
Explanation:
its the perfect square because the square root is 8 and 8 is a whole number therefore 64 is the perfect square here.
Answer: B
Explanation:
A - 18 is not spelled out; should be 'eighteenth'
B - correct
C - no apostrophe in the decade; should be '50's'
D - name of the decade is spelled out; should be '1970s'
If the students ( aren’t/ are not )late for the exam, they (pass / proceed / advance /move forward or go on )