Which situation is an example of an observational study?

Mathematics

2 answers:

user100 [1]2 years ago

6 0

Answer:

Step-by-step explanation:

CaHeK987 [17]2 years ago

4 0

Answer:

D- Recording the reaction time of participants in a study who were asked to press a button as soon as they see a certain picture on a screen.

Step-by-step explanation:

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I'm pretty sure the answer is median, just need confirmation, has a picture. Please help! Thanks!!

anygoal [31]

It's a median you are right

8 0

3 years ago

Read 2 more answers

Karen was trying to factor 6x^2+10 She found that the greatest common factor of these terms was 2 and made an area model

Kay [80]

<h2>Explanation:</h2><h2></h2>

In this case we have the following expression:

$6x^2+10$

We know that Karen was trying to factor out this and she found that the greatest common factor of these terms was 2, in other words we can write this expression as:

$2(3x^2+5)$

An area model for this expression could be the area of a rectangle that has the following dimensions:

$W=2 \\ \\ L=3x^2+5 \\ \\ \\ Where: \\ \\ W:width \\ \\ L:length$

So the area model can be written as:

$A=W\times L \\ \\ \boxed{A=2(3x^2+5)}$

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3 years ago

6700 dollars is placed in an account with an annual interest rate of 8%. How much will be in the account after 24 years, to the

daser333 [38]

$\bf \qquad \textit{Simple Interest Earned Amount}\\\\
A=P(1+rt)\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to& \$6700\\
r=rate\to 8\%\to \frac{8}{100}\to &0.08\\
t=years\to &24
\end{cases}
\\\\\\
A=6700(1+0.08\cdot 24)\implies A=19,564.00$