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rewona [7]
3 years ago
11

A five-question quiz is taken in which the first and second questions have four answer choices, the third and fourth questions h

ave three answer choices, and the last question has five answer choices. If a student randomly marks an answer for each question, what is the expected number of questions he will answer correctly?
Mathematics
2 answers:
Andrej [43]3 years ago
5 0

Answer:

1.37

Step-by-step explanation:

pychu [463]3 years ago
3 0

Answer: choice a 1.37 is the awnser

Step-by-step explanation:

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Why is ac smaller than ad if they both look very close
kakasveta [241]

Let's begin by listing out the information given to us:

We start out by observing that Triangles MKR & ACD are similar or proportional

\begin{gathered} MK=21;AC=\text{?} \\ MR=24;AD=28\frac{4}{5} \\ KR=CD=\text{?} \end{gathered}

We will solve for the missing side by using the similar triangle theorem. This is shown below:~

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