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Natalka [10]
3 years ago
6

The math test has 10 multiple choice questions, each with 3 answers. If Betty guesses correctly on the first 3 questions, what i

s the probability that she will guess correctly on the fourth question?
Mathematics
2 answers:
Roman55 [17]3 years ago
5 0
I would say that Betty will have a probability to guess 1/3 on the fourth question due to the test only having 10 multiple choice questions with three answers. 
alukav5142 [94]3 years ago
4 0

Answer: \dfrac{1}{3}

Step-by-step explanation:

Given: The number of multiple choices to each question = 3

We know  that in multiple choice question there is only one answer is correct .

Then the probability that she will guess correctly on any question is given by :-

=\dfrac{\text{Correct choice}}{\text{Total choices}}\\\\=\dfrac{1}{3}

Hence, the  the probability that she will guess correctly on the fourth question = \dfrac{1}{3}

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so the rephrased question is
when hazel was x years old, she was 25 years older than son gary who was y old at that time (equation is x is 25 more than y or x=25+y)
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'of' in math means multiply so
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add like terms
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I personally dislike decimals to multiply both sides by 2 to make 2 0.5's or 1 (you are technically supposed to distribute or divide both sides by 1.5) so
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