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UNO [17]
3 years ago
9

Really need help! 2 1/2 = 1 2/3 ÷y The thing I usually use isn't giving me an answer!!

Mathematics
1 answer:
Greeley [361]3 years ago
8 0

Answer:

the answer is no solution

Step-by-step explanation:

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An investigator reviewed the medical records of 200 children seen for care at Boston Medical Center in the past year who were be
lisov135 [29]

Answer:

cohort study

Step-by-step explanation:

Given that an  investigator reviewed the medical records of 200 children seen for care at Boston Medical Center in the past year who were between the ages 8 and 12 and identified 40 children with asthma. He also identified 40 children of the same ages who were free of asthma. Each child and their family were interviewed to assess whether there might be an association between certain environmental factors such as exposure to second-hand smoke.

The objective of this experiment is to test the causes of the disease asthma and to find the risk factors and environment causing this disease.

So this cannot come under randomized control nor case control.

Cross over study is to put to two different environments two groups and study.  But here nothing is influenced actual environments are studied

Hence this comes under cohort study

3 0
2 years ago
*trigonometry and area.*
soldier1979 [14.2K]

Answer:

<u>The correct answer is that the area of the regular octagon is 309 cm²</u>

Step-by-step explanation:

There are several formulas for calculating the area of a regular octagon. We will use this one for solving this question because it does not require additional information .

Area = (2 * s²)/tan 22,5°

s = 8 cm

Replacing with the real values, we have:

Area = (2 * 8²)/tan 22,5°

Area = 2 * 64/0.4142

Area = 128/0.4142

<u>Area = 309 cm² (Rounding to the nearest tenth)</u>

6 0
2 years ago
What is the area of the circle in square units? Select ALL that apply.
lukranit [14]
The answer is F.)
Approximately 50
7 0
2 years ago
Find the mean of <br>35,26,31,16,21,23,27,30,26,17,19,27​
zzz [600]

Hello!

To find the mean, we must add all the terms in the dataset and divide by how many there are.

35+26+31+16+21+23+27+30+26+17+19+27=450

There are 12 terms in the dataset, so we divide by 12:

37.5

So the mean of this set is 37.5.

Hope this helps you!

~Just a joyful teen

SilentNature

4 0
2 years ago
Read 2 more answers
A language arts test is worth 100 points. There are a total of 26 questions. The spelling questions are worth 2 pts and vocab is
hram777 [196]
10 spelling and 16 vocab because 10 * 2 is 20 and 16 * 5 is 80 and 80+20 is 100
3 0
3 years ago
Read 2 more answers
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