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Helen [10]
3 years ago
5

Jason predicted that 277 students would attend the school dance. The actual number was 250. What is the precent error of Jason's

prediction?
Mathematics
1 answer:
mafiozo [28]3 years ago
7 0

Answer:

9.7%

Step-by-step explanation:

Given data

Expected value= 277

Actual value= 250

%Error= Actual- Expected/Expected *100

%Error= 250-277/277 *100

%Error= 27/277 *100

%Error= 0.097*100

%Error= 9.7

Hence the error is 9.7%

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4 years ago
Ellen bought 3 greeting cards for $3 each.
Ne4ueva [31]

Answer:

(3×3)+2=11

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Step-by-step explanation:


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3 years ago
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kompoz [17]

This is an awful question.  They mean to say  the number of hours practicing <em>per week</em> (we'll call it h) varies inversely with the <em>time</em> (t) she runs her event.  Unless they mean to imply more practicing makes Tyler slower, in which case she should just get a pizza.

Inverse variation means the product is a constant, we'll call it k.

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When h = 1 hour t=6 minutes

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4 years ago
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A bag contains 4 blue marbles, 2 yellow marbles, and 6 orange marbles. What is the probability of picking an orange marble and t
ikadub [295]

We will see that the probability of picking two orange marbles without replacement is 0.23

<h3>How to get the probability?</h3>

If we assume that all the marbles have the same probability of being randomly picked, then the probability of getting an orange marble is given by the quotient between the number of orange marbles and the total number of marbles, this gives:

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And then we need to get another orange marble, without replacing the one we picked before, this time there are 5 orange marbles and 11 in total, so the probability is:

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Finally, the joint probability (of these two events happening) is the product of the probabilities, so we get:

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If you want to learn more about probability, you can read:

brainly.com/question/251701

5 0
3 years ago
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