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Elanso [62]
2 years ago
11

The questions on a test consist of 10 multiple choices, 3 essays, and 9 free responses. If the questions are ordered randomly, w

hat is the probability that the first question is a free response?
SAT
1 answer:
kiruha [24]2 years ago
7 0

Answer:

9/22 or 40.9%

Explanation:

Probability describes the likelihood of an event. To find simple probability, like in this question, use division.

To find the probability of the first question being a free response, you first need to find the total number of questions. This can be done by adding together all of the given information. There are 10 multiple choice, 3 essays, and 9 free responses.

  • 10 + 3 + 9 = 22

This means that there are 22 total questions. Next, find how many of these questions are free-response. We know that there are 9 free responses and 22 questions in total. So, 9 out of 22 are free responses. This can be rewritten as 9/22.

If you want to find the percentage, simplify the fraction and convert it to a percentage.

  • 9/22 = 0.409

Then, move the decimal 2 places to the right. This gives you 40.9%, which is the probability of the first question being a free-response.

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Answer:

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Explanation:

In this question the choices are missing, the choices of this question are:

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  2. Computational thinking involves the techniques of decomposition, pattern recognition, abstraction, and algorithm development.
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<u>The correct 3 choices about computational thinking that are true are given below:</u>

1.The result of computational thinking is a problem broken down into its parts to create a generalized model and possible solutions.  

2. Computational thinking involves the techniques of decomposition, pattern recognition, abstraction, and algorithm development.

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Explanation:

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The activity series shows the order of reactivity of elements. The elements that are higher in the activity series will displace the elements that are lower in the activity series.

The activity series of halogens is shown as; F > Cl > Br > I. Let us consider the reaction;  Br2 + NaF ----->

We can see that bromine is less than fluorine in the activity series hence there will be no reaction because bromine can not not displace fluorine.

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