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Levart [38]
3 years ago
11

Which sequences are geometric? Check all that apply.

Mathematics
1 answer:
hichkok12 [17]3 years ago
6 0
Geometric sequences are characterized by having a common ratio, r. It is calculated by getting the ratio of a(n+1) and a(n). We can determine which is the geometric sequence, if we calculate which sequence will have a common ratio. We do as follows:

<span>A) –2.7, –9, –30, –100, ... 
-9/-2.7=10/3
-30/-9=10/3

B) –1, 2.5, –6.25, 15.625, ... 
2.5/-1=-2.5
-6.25/2.5=-2.5

C) 9.1, 9.2, 9.3, 9.4, ... 
9.2/9.1=92/91
9.3/9.2=93/92

D) 8, 0.8, 0.08, 0.008, ... 
0.8/8=1/10
0.08/0.8=1/10

F) 4, –4, –12, –20, ...
-4/4 = -1
-12/-4=3

Therefore, options A,B and D represents a geometric sequence.</span>
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Answer:

The range of values likely to contain the true value of the population parameter is between 44% and 52%.

Step-by-step explanation:

Confidence interval concepts:

A confidence interval has two bounds, a lower bound and an upper bound.

These bounds are dependent of the sample mean and of the margin of error.

The lower bound is the sample mean subtracted by the margin of error, while the upper bound is the margin of error added to the sample mean.

The confidence interval is likely to contain the true value of the population parameter.

In this question:

Sample mean: 48%

Margin of error: 4%

48 - 4 = 44%

48 + 4 = 52%

The range of values likely to contain the true value of the population parameter is between 44% and 52%.

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3 years ago
What is the definition of the 3rd batter in a baseball lineup called?
PolarNik [594]

That batteris refered to as a the "heart of the order" and have the function on getting on base and hitting hard.

These batters come before the clean-up batters.


Hope it helped,


BioTeacher101

4 0
3 years ago
I can understand the meaning (passive)<br>​
iVinArrow [24]

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3 years ago
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0.9(3÷2.25− 1/8 (1 2/3 1/9 ))− 4/7 ÷0.8. i would like to know what this equals if you could help that would be great.
mario62 [17]

Answer:

781/1680

Step-by-step explanation:

Don't you have a calculator?

I assume that by (1 2/3 1/9), you mean (1+2/3)*(1/9)

Assuming that you put all necessary parentheses:

781/1680, approx. 0.4648809523809524



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4 years ago
Which equation is in standard form? 15pt.<br><br> a) 4x+3y=10<br> b) 3y+4x=10<br> c) 3y=-4x+10
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The answer is b:3y+4x=10
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4 years ago
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