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LiRa [457]
3 years ago
9

How do you do this question?

Mathematics
1 answer:
katovenus [111]3 years ago
8 0
<h3>4 Answers: A, C, E, and F</h3>

================================================

Explanation:

Choice A is true assuming we have a_n = (-1)^n*b_n

In this case, a_n = (-1)^n*\frac{1}{\sqrt{n}} and b_n = \frac{1}{\sqrt{n}}

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Choice B is false. See choice A above.

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Choice C is true. The sequence \{b_n\} is decreasing. As n gets larger, b_n gets smaller. This is because the denominator is growing larger with the numerator held constant.

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Choice D is false. This contradicts choice C.

--------

Choice E is true since the denominator is growing forever

This is similar to  \displaystyle \lim_{n \to \infty} \frac{1}{n} = 0

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Choice F is true due to choices C and E being true.  

--------

Choice G is false because it contradicts choice F.

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Which ratio is porportional to 18/21? A.2/3 B. 30/35 C. 36/48 D.1/3
defon
You can solve this problem by applying the proccedure below:
 
 You have:
 
 a) 18/21=2/3
 18x3/21x2
 36≠42 (2/3 is not proportinal to 18/21).
 
 b)18/21=30/35
 18x35/21x30
 630=630  (30/35 is proportional to 18/21)
 
 c)18/21=36/48
 18x48/21x36
 864≠756  (36/48<span> is</span><span> not proportinal to 18/21)
</span> 
 d)18/21=1/3
 18x3/21x1
 54≠21  (<span> 1/3 is</span><span> not proportinal to 18/21)
</span> 
 Therefore, you can conclude that the correct option is: B.30/35
8 0
3 years ago
A cylinder has a height of 5 centimeters and a radius of 2.3 centimeters. What is the volume of this cylinder?
Arlecino [84]

Answer:

c 83.10

Step-by-step explanation

3.14 times 2.3 times 5

4 0
3 years ago
3(x+4) - 5(x - 1) &lt; 5
DaniilM [7]

Answer:

It's E. x > 6

Step-by-step explanation:

8 0
3 years ago
Solve the proportion W over thirty-six = five over eighteen.
storchak [24]

Answer:

W=10

Step-by-step explanation:

\frac{W}{36}=\frac{5}{18}

multiply both sides by 36

W=10

8 0
2 years ago
What is the slope of the line represented by the equation y=- 1/2x + 1/4
Andreyy89

Answer:

-1/2x

Step-by-step explanation:

-1/2x represents the slope because it shows that the line is going down 1/2 every x. 1/4 would be where the line started or the y-intercept.

8 0
3 years ago
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