Microscopic hair structures that extend far out from animal cells, they are important and play a vital part in both humans and animals develpoment and everday life..i hope this helps..
Explanation : x = 79 marks
The marks scored by Mike on four math test are 88,91,75 and 72.
Average of marks, A = 81
Let in fifth test he scores x marks.
The formula for finding average is :




In the fifth test he scores 79 marks.
Hence, this is the required solution.
Do you still need this answered
Answer:
2000
Explanation:
It is very close between 1990 and 2000, but from what I can see, 2000 had the least precipitation.
The respiratory system regulates oxygen flow, and provides regulation for oxygen blood content. Circulatory system plays a roll in providing enough oxygenated blood to the body