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loris [4]
3 years ago
7

5. Suppose that a study of oral contraceptive (OC) use and development of bacteriuria was conducted among 2,390 women, all of wh

om were initially free from bacteriuria. At the start of the study, the women were surveyed to determine whether or not they currently used OCs. 482 were using OCs and 1908 were not. By the end of the follow-up period, a total of 27 of the OC users and 77 of the non-users had developed bacteriuria. Shambhavi A. Is this a cohort study or an experimental study
Mathematics
1 answer:
Klio2033 [76]3 years ago
8 0

Answer:

Cohort study

Step-by-step explanation:

The study described above is closely related to a cohort study in that Cohort studies mainly observes the participants who might or might not have been exposed to a particular effect or drug, in this case the oral contraceptive and bacteriuria development. The effect of exposure is observed for a certain period time usually called the follow-up period. Conversely, experimental study will require that participants are divided into groups with one group being exposed to the treatment while the other will be the placebo.This isn't the case in the study described above, hence, it is closely related to a cohort study.

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Find the measure of the central angle with an arc length equaling 29.21 and a circumference = 40.44
Dima020 [189]

measure of central angle is 4.607 radians with an arc length equaling 29.21 and a circumference = 40.44

Step-by-step explanation:

Arc length = 29.21

Circumference = 40.44

Central angle = ?

The formula used to find central angle is:

s=r\theta

where s = arc length, r= radius and Ф=central angle.

We need to find radius from circumference

c=2\pi r\\r=\frac{c}{2\pi } \\Putting\,\,values:\\r=\frac{40.44}{2*3.14}\\r=6.43

So, radius = 6.34

Now, finding central angle:

s=r\theta\\29.21=6.34\,\,\theta\\\theta=\frac{29.21}{6.34}\\\theta=4.607\,\,radians

So, measure of central angle is 4.607 radians with an arc length equaling 29.21 and a circumference = 40.44

Keywords: Central angle of circle

Learn more about Central angle of circle at:

  • brainly.com/question/8618791
  • brainly.com/question/2115496
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#learnwithBrainly

5 0
3 years ago
What is thirty-four and twelve hindredths in expanded form?
strojnjashka [21]
The answer is two hundred thirty four.
6 0
4 years ago
Write the polynomial function with the given zeros.<br> 5. x= -1,-1, 6
Allushta [10]

Answer:

Step-by-step explanation:

There are many such polynomials, but the one with leading coefficient of 1 is

y = (x+1)(x-1)(x-6) = x^3 - 6x^2 - x + 6

Not sure what you want to do with the 5, If that is the y-intercept, then since

(1)(-1)(-6) = 6, we will need

y = 5/6 (x^3 - 6x^2 - x + 6)

5 0
3 years ago
5 + 8(3 + x) =<br> =<br> Simplify the expression
alisha [4.7K]

Answer:

29 + 8x

Step-by-step explanation:

5 + 8(3 + x)       by PEDMAS parentheses first

= 5 + 3(8) + x(8)

= 5 + 24 + 8x

=  29 + 8x

3 0
3 years ago
A restaurant bill comes to $23.35. find the total cost if the tax is 6.25% and a 20% tip is left of the amount.
ikadub [295]
The total with the tip included is:  $29.77
Add 6.25% to $23.35 =$24.80 + 20% =
$29.77

4 0
3 years ago
Read 2 more answers
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