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Gennadij [26K]
3 years ago
15

Amit is going to guess on all 202020 questions of his multiple-choice test. Each question on the test has 444 answer options, an

d only one is correct. What is the best prediction for the number of questions that Amit will answer correctly?
Mathematics
2 answers:
babunello [35]3 years ago
8 0

Answer: 5 questions

Step-by-step explanation:

If there are four options and only one is correct. I.e option a, b ,c and d

Let us first calculate the probability of answering on one question.

The probability of getting one question correctly will be

1 /4

Number of questions she will get correctly among the 20 questions will be

1/4 × 20 = 5 questions

erica [24]3 years ago
8 0

Answer:

Close to 5 questions but probably not exactly 5 questions.

Step-by-step explanation:

i just got that answer right

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Answer:

x=11

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Step-by-step explanation:

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3 years ago
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The cup was filled at a constant rate. It started empty. After 2 seconds, it held 70 cm cubed of water.Find the percent of the c
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Answer:

In 3 seconds the cup is filled with 105\ cm^3<u>.</u>

Step-by-step explanation:

Given:

2 seconds = 70\ cm^3 water

We need to find the percent of the cup that is filled with water after 3 seconds.

Solution:

Now Given:

The cup was filled at a constant rate.

First we will find the volume of water filled in the cup after 1 seconds.

2 seconds = 70\ cm^3 water

1 seconds = Volume of water filled in 1 second.

By Using Unitary method we get;

Volume of water filled in 1 second = \frac{70}{2}= 35\ cm^3

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1 second = 35\ cm^3 of water is filled

3 seconds = volume of water filled in the cup after 3 seconds

Again by using Unitary method we get;

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Hence In 3 seconds the cup is filled with 105\ cm^3.

To find the percent of the cup filled with water after 3 seconds we would required the dimensions of the cup which is not available in the question.

6 0
3 years ago
A triangular courtyard has a perimeter of 120 meters. The lengths of two sides are 30 meters and 50 meters. How long is the thir
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Answer:

the third side is 40 m long

Step-by-step explanation:

The perimeter of the triangle is the sum of its three sides, and they give you what that value in meters is (120 m)

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Now set the following equation:

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120 m - 80 m = x  --> perform the subtraction 120 m - 80 m = 40 m

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The answer to your question,

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