Considering that the data is only noted and not changed, this is an example of an observational study.
<h3>What are observational and experimental studies?</h3>
- Experimental study: In an experimental study, there is an intervention in a sample, and it's effect is studied.
- Observational study: In an observational study, the sample is just analyzed, without any intervention.
In this problem, the data, which is the number of miles traveled, is only analyzed, no interventions are made, hence this is an example of an observational study.
More can be learned about observational studies at brainly.com/question/24321224
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Answer:
Step-by-step explanation:
This first step is to take the square root of the minus which is understood to be - 1
sqrt(-1) = i
So far what you have is
sqrt(-98) = i*sqrt(98)
sqrt(98) is just found the ordinary way
sqrt(98) = sqrt(7*7*2)
sqrt(7*7*2) = 7*sqrt(2)
Answer: 7 * i * sqrt(2) = i7*sqrt(2)
Pick the choice that looks like what you have done for homework.
Nine billion, nine hundred thousand, nine.
Answer:
-9/10
Step-by-step explanation:
when dividing fractions, the second fraction flips upside down. Then you just multiply.
-4/5 divided by 8/9 becomes -4/5 * 9/8 = -36/40 = -9/10
would the answers be 0.5? i'm not sure but i tried. have a great day.
cuz half (x2) of a number (x) is (=) one..
2x=1
0.5=x
0.5x2=1