26.Which expression is equivalent to
1 answer:
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Answer:
Step-by-step explanation:
Total number of questions = 20
Possible options for each question = 4
Sample space contains the total number of possible outcomes.
For every question there are 4 possible ways to select an answer. This holds true for all 20 questions. Selecting an answer for a question is independent of other questions/answers,
According to the counting principle, the total number of possible outcomes will be the product of the number of possible outcomes of individual events. Possible outcomes for each of the 20 questions is 4. This means we have to multiply 4 twenty times to find the total number of possible outcomes.
So, the number of elements in the sample space would be:
For this case we have the following expression:
What we must do in this case is to use one of the properties of the sum.
In this case, we must use the associative property.
The associative property states:
We have then:
Simplifying we have:
Answer:
the following is equal to (2x / 3 - 7) + 7
D. 2x / 3.