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abruzzese [7]
4 years ago
10

A student is taking a multiple-choice exam in which each question has four choices. Assume that the student has no knowledge of

the correct answers to any of the questions. She has decided on a strategy in which she will place four balls (marked A,B,C, and D) into a box. She randomly selects one ball for each question and replaces the ball in the box. The marking on the ball will determine her answer to the question. There are five multiple-choice questions on the exam. What is the probability that she will get
A. five quesions correct?
B. At least four questions correct?
C. No questions correct?
d. No more than two questions correct?
Mathematics
1 answer:
Harlamova29_29 [7]4 years ago
6 0

Answer:

i think its d

Step-by-step explanation:

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+50 points quiz
Sedaia [141]

Answer:

wasting your points but hey these are the answers

Step-by-step explanation:

1) 72

2) 2

3) 30

4) 2

5 0
3 years ago
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What is the answer to this somebody!!!
Galina-37 [17]

So with this, you'll be using a proportion to solve it. And here's what your equation will look like:


\frac{30}{x} =\frac{x}{24}


Firstly, you'll need to cross-multiply. Your equation will look like this: 720=x^2


For this, all you need to do is square root, and your answer is \sqrt{720} =x, however this answer can be simplified further.


\sqrt{720} =\sqrt{30*24} =\sqrt{5*6*6*4}=\sqrt{5*3*2*3*2*2*2} =4*3\sqrt{5} =12\sqrt{5}


In short, your answer is 12\sqrt{5}

7 0
3 years ago
A cyclist traveled 15 kilometers per hour faster than an in-line skater. In the time it took the cyclist to travel 12 kilometers
Nostrana [21]

Answer:

Step-by-step explanation:

Fhji

6 0
4 years ago
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(THIS IS A TEST I NEED HELP)
Dmitrij [34]

Answer:

i think its C

Step-by-step explanation:

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URGENT. ANSWER ASAP. PROMISE BRAINLIEST+5STARS+THANKS
victus00 [196]
I would have to say (B) ! Good Luck :D
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