Step-by-step explanation:
Chord AB and Chord CD are equidistant from the center of the circle.
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:
10p coins does he have 102
Step-by-step explanation:
given data
saves= 10p coins and 20p coins
total = 17 pounds
to find out
how 10p coins does he have
solution
we consider here no of 20p coin = x
so equation will be here
3 × 10 x +20 x = 1700
30 x + 20 x = 1700
x = 34
so that
10p coins = 3 time × 34 = 102
20p coins = 34
so that 10p coins does he have 102
Answer: -9 OR 15 (See explanation)
Step-by-step explanation:
Substitute 4 for t since t represents hours:
0.75t - 12 --> 0.75(4) - 12 =
3 - 12 =
-9
Something seems off, if you meant to put +12 instead of -12, then the answer is 15. Hope this helps, please consider making me Brainliest.
