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Sauron [17]
4 years ago
15

How to do two step equations simple please help and you can do the example on this one: 2x+5=21

Mathematics
1 answer:
Novosadov [1.4K]4 years ago
4 0

Answer: The answer here is x=2

Step-by-step explanation:

This is a linear equation, take 5x to other side ut will change a sign then solve for x.

2x+5=21

2x=21-5

2x=16

Lastly divide by 2 both sides to get 2

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Which of the following is true regarding the sequence graphed below?
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Answer:  The correct option is

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Step-by-step explanation:  We are given to select the true statement regarding the sequence that is graphed in the figure.

From the graph, we see that some of the points are (1, 1), (2, 4), (3, 9), (4, 16), (5, 25).

That is, if we write the graphed points in terms of a sequence <a(n)>, then we get

a(1)=1,\\\\a(2)=4,\\\\a(3)=9,\\\\a(4)=16,\\\\a(5)=25.

The sequence <a(n)> will be arithmetic if the difference between the consecutive terms is equal. That is, the terms should have a common difference.

Now,

a(2)-a(1)=4-1=3,\\\\a(3)-a(2)=9-4=6,\\\\a(4)-a(3)=16-9=7,\\\\a(5)-a(4)=25-16=9.

This implies that the terms do not have a common difference and so the graphed function does not represent an arithmetic sequence.

Thus, the sequence is not arithmetic because the terms do not have a common difference.

Option (D) is CORRECT.

5 0
3 years ago
Mike was training for a marathon. On his first day, he ran 2.45 kilometers. On the second day, he ran 3.8 kilometers. How far di
alekssr [168]

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4 0
3 years ago
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3 years ago
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