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3 years ago

Determine whether the study depicts an observational study or an experiment.

Mathematics

1 answer:

USPshnik [31]3 years ago

6 0

Answer:

Option c

Step-by-step explanation:

The study is an observational study. An observational study is made when the researchers collect data based on what they see, hear or observe without any form of manipulation or treatment plan from the researchers. Thus, in this case, the study is an observational study because the study examines individuals in a sample, but does not try to influence the response variable/influence their responses.

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Answer:

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Step-by-step explanation:

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His mother baked 7 more cookies

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3 years ago

*URGENT*TEST TOMORROW*

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Answer:

"Dominic lived in Spain for 13 months and Columbia for 7 months."

Step-by-step explanation:

let months stayed in spain be "s" and months stayed in columbia be "c"

We can write 2 equations.

Since, lived in Spain and Columbia for a total of 20 months, we can write:

s + c = 20

Also, since 120 words per month in Spain and 150 words per month in Columbia for a total of 2610 new words, we can write:

120s + 150c=2610

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120(20 - c) + 150c = 2610

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