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Tanzania [10]
2 years ago
12

I need help with this.

Mathematics
1 answer:
inna [77]2 years ago
8 0

k=121 degrees

t=29 degrees

d=30 degrees

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PLEASE HELP ME!!!!!!!
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<h3>Answer:</h3>

D. This is an experiment because it is applying a treatment

<h3>Step-by-step explanation:</h3>

Experiments and observational studies are both ways to find new information about a hypothesis but in different ways.

Vocabulary

First, to understand the question, let's define the key terms.

  • Experiment - An experiment is when a scientist purposely applies a treatment and interferes with a person's life in order to gather information.
  • Observational Study - This type of study attempts to study a person without interfering with their lives in any way.

These definitions eliminate the answer choices A and C because both of them match the incorrect definition of the term.

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2 years ago
You buy 30 of your favorite songs from a Web site that charges ​$0.98 for each song. What is the cost of 30 ​songs? Use mental m
zubka84 [21]

If you are going to use mental math, round $0.98 up to $1.

Rounded, the cost of the 30 songs is $30.

However, since you rounded at the beginning, you need to subtract 2 cents for every song you purchased from the total of $30.

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Your answer should be $29.40.

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Read 2 more answers
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