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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:
Page number 74
Step-by-step explanation:
Let
x ---> the number of days
y ---> the number of pages read
we know that
The linear equation in slope intercept form is equal to
where
m is the slope
b is the y-intercept
we have
<em>Anne</em>
The slope is equal to
The y-intercept is equal to
substitute
----> equation A
<em>Willow</em>
The slope is equal to
The y-intercept is equal to
substitute
----> equation B
equate equation A and equation B
solve for x
Find the value of y
substitute the value of x in equation A or equation B
equation A
equation B