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jeyben [28]
3 years ago
12

In a multiple choice quiz there are 5 questions and 4 choices for each question (a, b, c, d). Robin has not studied for the quiz

at all, and decides to randomly guess the answers. Find the probabilities of each of the following events: (a) the first question she gets right is the 3rd question
Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
7 0

Answer:

We have 20 category Questions split into 5

Where we would assume that the 3rd question is simply 1/4 + 5/20 chance.

This is not a determiner as Robin is asked more questions.

So it is simply 1/4 and kept to factors that Robin will answer one of the 4 choices upon the 3rd question as 1/4 regardless of other questions being asked. Where Robins first answer would be the third question we subtract 4/5 = 16/20 - 5/20= 11/40. Which can only be rounded down to 2 decimal places 0.275

Step-by-step explanation:

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Answer:

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6 0
3 years ago
One side of a right triangle has a length of 12 feet. Which of the following could be lengths for the two other sides of the rig
Elodia [21]

Answer:

B

Step-by-step explanation:

Apply the Pythagorean Theorem to determine whether or not the given triplets represent right triangles or not:

I. 5 feet and 13 feet:  5^2 + 12^2 = 13^2 is TRUE

II.  9 ft and √63 ft:  9^2, 63, 12^2:  63 + 81 do add up to 144  TRUE

III.  2, 10, 12^2:  2 + 10 do NOT add up to 144.  FALSE

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5 0
2 years ago
Help me plz check it
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3 1/4 = 3.25

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Correct answer is D. 17,160

6 0
3 years ago
If m/n=5/9, then m+n/n=?/?
Dafna1 [17]
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3 years ago
In the solution of the equation 5 - 3x = 2x + 9, 3x is added to the equation first. Which of the following should be done next?
olganol [36]
<span>In finding the solution for x, the idea is to isolate the variable on one side of the equation
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4 0
2 years ago
Read 2 more answers
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