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alekssr [168]
2 years ago
7

A student is conducting a research project that involves using a survey. The survey asks subjects about their political affiliat

ion and their favorite politicians. No identifiable information will be collected. This study would be categorized as which type of review?
Mathematics
1 answer:
stealth61 [152]2 years ago
6 0

Answer:

This study will be identified as : exempt review

Step-by-step explanation:

A student is conducting a research project that involves using a survey. The survey asks subjects about their political affiliation and their favorite politicians.

No identifiable information will be collected.

This study will be identified as : exempt review

To qualify for a review at the exempt level, the research should be less than the minimal risk defined.

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A. [4 marks]
storchak [24]

The value of d is -2

Step-by-step explanation:

The nth term of the arithmetic sequence is u_{n}=u_{1}+(n-1)d , where

  • u_{1} is the first term
  • d is the common difference between each 2 consecutive terms

The nth term of the geometric sequence is u_{n}=u_{1}r^{n-1} , where

  • u_{1} is the first term
  • r is the common ratio between each two consecutive terms r=\frac{u_{2}}{u_{1}}=\frac{u_{3}}{u_{2}}

∵ u_{1} of an arithmetic sequence is 1

∵ The common difference is d, where d ≠ 0

∵ u_{2} , u_{3} , u_{6} are the first 3 terms of a geometric sequence

∵ u_{2} = 1 + (2 - 1)d

∴ u_{2} = 1 + d

∵ u_{3} = 1 + (3 - 1)d

∴ u_{2} = 1 + 2d

∵ u_{6} = 1 + (6 - 1)d

∴ u_{2} = 1 + 5d

∴ The first 3 terms of the geometric sequence are (1 + d) , (1 + 2d) ,

   (1 + 5d)

∵ The common ratio in the geometric sequence is r=\frac{u_{2}}{u_{1}}=\frac{u_{3}}{u_{2}}

∴ r=\frac{1+2d}{1+d}=\frac{1+5d}{1+2d}

- Use cross multiplication with the equal fractions

∵ \frac{1+2d}{1+d}=\frac{1+5d}{1+2d}

∴ (1 + 2d)(1 + 2d) = (1 + d)(1 + 5d)

∴ 1 + 2d + 2d + 4d² = 1 + 5d + d + 5d²

- Add like terms in each side

∴ 1 + 4d + 4d² = 1 + 6d + 5d²

- Subtract 1 from both sides

∴ 4d + 4d² = 6d + 5d²

- Subtract 4d from both sides

∴ 4d² = 2d + 5d²

- Subtract 4d² from each side

∴ 0 = 2d + d²

- Take d as a common factor

∴ 0 = d(2 + d)

- Equate each factor by 0

∴ d = 0 but we will reject it because d ≠ 0

∴ 2 + d = 0

- Subtract 2 from both sides

∴ d = -2

The value of d is -2

Learn more:

You can learn more about the sequence in brainly.com/question/1522572

#LearnwithBrainly

7 0
3 years ago
What is greater and what is least 6.00 0.56 0.060 0.60 0.056 0.557781 0.059999
tangare [24]

Answer:

6.00, 0.56,0.557781,0.059999, 0.056

Step-by-step explanation:

Look at the place values

4 0
3 years ago
Answer the questions about the cone. V= 1/3 BH
BartSMP [9]

Answers the answer for question one is 3 , for question number two the answer is 9 and the answer for the last question is 24

Step-by-step explanation:

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3 years ago
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Kobotan [32]

Answer:

bdhdbhdjndjxbdixn,jzhhdhuu,ubxhsjxjnx

6 0
3 years ago
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Which shape is a parallelogram?<br><br> I’ll mark you if you give the right answer!!
Lilit [14]

Answer:

The rectangle is a parallelogram.

Step-by-step explanation:

Parallelograms are shapes with two pairs of parallel sides.

The rectangle is the only shape that meets those requirements.

5 0
2 years ago
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