Z = (x -μ)/σ
.. = (99 -88)/5
.. = 11/5
.. = 2.2
The z score is 2.2.
The Paleozoic Era is bracketed by two major events in earth's history. It began with an unexplained explosion in animal life and ended with the world's largest mass-extinction known to man. The causes of these great events are currently unknown and under debate.
Answer:
5.17
Explanation:
24.80/0.08 = 3.10
24.80/0.015 = 16.53
16.53 + 3.10 = 19.63
24.80 - 19.63 = 5.17
You might do this on a Calculator but you have to match the answers up with the condition of the Question.
The answer to your question is B. communicating using gestures
