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Andreyy89
3 years ago
10

Indicate whether the observational study used is cross-sectional, retrospective or prospective: Researchers from the National In

stitute of Health want to determine the current rates of smoking among adult males and adult females. They conduct a survey of 500 adults of each gender.
Mathematics
1 answer:
sp2606 [1]3 years ago
4 0

Answer:

Cross-sectional

Step-by-step explanation:

Cross sectional study is a type of observational study that analyzes data from a population of a representative subset at a particular point in time.

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A

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Mr. Donovan bought a shirt for $18.47<br> and pants for $25.95. How much<br> money did he spend?
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18.47

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Step-by-step explanation:

Trace a linha de 8cm, daí você vai dividir ela no meio, ou seja, no 4. Aí é só contar 2 cm para cada lado, que vai ser o 1, as pontas vão ser o 2. Tendeu? Daí é só marcar os pontos no -3/7(~-2,3), 1,6, 7/5(1,4), -1 e 0

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2 years ago
find the area of an isosceles trapezoid that has bases with lengths of 20 and 30 and legs of length 13
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325

Step-by-step explanation:

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8 0
3 years ago
Which of the following represents the geometric sequence?
anastassius [24]
The answer is sequence I (choice A)
The common ratio is r = 1 because we multiply each term by 1 to get the next term. No change happens when we multiply any number by 1. Another way to find the common ratio is to pick any term and divide it by its previous term. 

----------------------------------

Choice B is not the answer because (1/5) divided by (1/4) = 0.2/0.25 = 0.8
and because (1/6) divided by (1/5) = 0.833 approximately. We don't get the same value each time. So the common ratio doesn't stay the same.

Choice C is not the answer either since most of the terms are positive but the -4 in slot 3 is not positive. If it was positive, then the common ratio would be 4 and this sequence would be geometric. If the terms alternated between positive and negative, then it would work as well (r would be r = -4)

Choice D has alternating terms of positive and negative, but there's no change in absolute value. There is no growth or decay as this the terms effectively stay the same. So there is no common ratio. This is why we can rule out choice D.
4 0
4 years ago
Read 2 more answers
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