Probability helps us to know the chances of an event occurring. The estimated number of left-handed persons in the school is 89.
<h3>What is Probability?</h3>
Probability helps us to know the chances of an event occurring.

Given the number of girls is 320, the probability that a girl is left-handed is 0.2. Therefore, the number of girls who are left-handed is,
Number of left-handed girls = (320×0.2) = 64
Given the number of boys is 250, the probability that a boy is left-handed is 0.1. Therefore, the number of boys who are left-handed is,
Number of left-handed boys= (250×0.1) = 25
Hence, the estimated number of left-handed persons in the school is 89.
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Answer:
3.45 x 10^5 hope this helps
Answer:
z = -7
Step-by-step explanation:
8-12z=92
-12z = 92-8
-12z = 84
z = 84/-12
z = - 7
hope it helps!
5/√11 = 5√11/√11√11 = 5√11/11
6/√8 = (2*3)/(2^3/2) = 3√2/2
√(5/7) = √35/7