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docker41 [41]
3 years ago
6

Determine whether the description corresponds to an observational study or an experiment.Research is conducted to determine if t

here is a relation between stomach cancer and alcohol consumption.
Mathematics
1 answer:
Maslowich3 years ago
8 0

Answer:

Observational

Step-by-step explanation:

Observational studies are studies that measure the outcome of events without the introduction of interventions. They are useful in the formation of a hypothesis. The experiment described above is an observational study that compares two groups so as to measure the predictors of an outcome. No intervention is introduced to influence the outcome of the research.

An experiment on the other hand is often organized as a randomized control trial where subjects are divided into groups and a placebo or control group is introduced to monitor the outcome of the study.

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Kobotan [32]

Answer:

1. 17.73 or 17 \frac{11}{15} or \frac{266}{15}

2. 5.32 or 5\frac{61}{188} or \frac{1001}{188}

Step-by-step explanation:

Each one is correct trust me ;)

7 0
3 years ago
A circle has a circumference of 2500 Pi what is the radius of the circle
Burka [1]
379.88 is the answer to this problem.
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3 years ago
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What's the volume of the following is rectangular prism plsssssss will mark brainlist HELPPPP
ozzi

Answer: 6.75 or 6 3/4

Step-by-step explanation: 3 3/8 x 2 = 6.75 Brainliest please?

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3 years ago
Which expression can be used to find the surface area of the following triangular prism
Temka [501]

Answer:

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Step-by-step explanation:

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3 years ago
Find the local extreme values of the function f(x, y) = xy - x2 - y2 - 3x - 3y + 12
aev [14]
f(x,y)=xy-x^2-y^2-3x-3y+12

First compute the first-order partial derivatives and find the critical points.


f_x=y-2x-3
f_y=x-2y-3

Both first order derivatives vanish at (x,y)=(-3,-3).


Computing the Hessian, we get

\mathbf H(x,y)=\begin{bmatrix}f_{xx}&f_{xy}\\f_{yx}&f_{yy}\end{bmatrix}=\begin{bmatrix}-2&1\\1&-2\end{bmatrix}

We have \det\mathbf H(x,y)=3>0, which means (-3,-3) is an extremum of f(x,y). Since f_{xx}(-3,-3)=-2, this extremum is a local maximum of f(x,y) with a value of 21.
5 0
3 years ago
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