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padilas [110]
3 years ago
15

Th sum of a number and two is equal to eight The equation?

Mathematics
2 answers:
11111nata11111 [884]3 years ago
8 0

Answer:

<h3>Let the number be n. </h3>

According to question,

2+ n =8

=) n = 8-2

=) n =6

hope you understand.

Luba_88 [7]3 years ago
4 0

Answer:

2+n = 8

Step-by-step explanation:

2+ something must equal 8.

8 minus 2 = 6

n=6

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skelet666 [1.2K]

Answer:

<h2>1/4 Chances</h2><h2>25% Chances</h2><h2>0.25 Chances (out of 1)</h2>

Step-by-step explanation:

Two methods to answer the question.

Here are presented to show the advantage in using the product rule given above.

<h2>Method 1:Using the sample space</h2>

The sample space S of the experiment of tossing a coin twice is given by the tree diagram shown below

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From the three diagrams, we can deduce the sample space S set as follows

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tree diagram in tossing a coin twice

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          E={(T,T)}

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Use the classical probability formula to find P(E) as:

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<h2>Method 2: Use the product rule of two independent event</h2>

Event E " tossing a coin twice and getting a tail in each toss " may be considered as two events

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with the probabilities of each event A and B given by

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Event E occurring may now be considered as events A and B occurring. Events A and B are independent and therefore the product rule may be used as follows

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NOTE If you toss a coin a large number of times, the sample space will have a large number of elements and therefore method 2 is much more practical to use than method 1 where you have a large number of outcomes.

We now present more examples and questions on how the product rule of independent events is used to solve probability questions.

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mario62 [17]

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