Jsquad8879
01.09.2020 •
Mathematics
Does anyone know how to answer this? The Probability that you draw a mechanical pencil from a group of 25 mechanical and wooden pencils is 3/5. How many are mechanical pencils?
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Ответ:
There are 15 mechanical pencils
Step-by-step explanation:
Recall that the probability of drawn a mechanical pencil from a larger group is given by the quotient of the number of mechanical pencils divided the total number of pencils in the sample.
so that means:
being x the number of mechanical pencils and 25 the total of all pencils in the sample. Since they give as P as 3/5, we can solve for the number of mechanical pencils (x) using the equation:
So there are 15 mechanical pencils in the sample.
Ответ:
The equation that Howard can use to determine x is
The height of the statue of liberty is
Step-by-step explanation:
Let
x-----> the height in meters of the statue of liberty
we know that
Using proportion
-----> equation that Howard can use to determine x