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SIZIF [17.4K]
3 years ago
15

Miranda conducted a survey on how many hours per day students spend surfing the internet versus how many pets they have. She sur

veyed ten of her classmates and recorded the data in the scatter plot below.
Use technology to determine which equation best models the data in the scatter plot.
A.
y = -0.4x + 6.3
B.
y = -7.4x + 0.7
C.
y = -0.7x + 7.4
D.
y = -6.3x + 0.4

Mathematics
1 answer:
anzhelika [568]3 years ago
7 0

Answer:

Step-by-step explanation:

a

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Answer:

Multiplication

Step-by-step explanation:

x=20•4

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PLEASE HELP ME!!!!!!!
Airida [17]
<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.

Experiment vs. Observational Study

Now, we need to figure out if this specific example is an experiment or an observational study. In this case, the nutritionist is giving a treatment of vitamins. This means that this cannot be an observational study because the scientist is interfering with people. It has to be an experiment because there is a specific treatment being applied.

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2 years ago
The area of a rectangle is 45 m squared, and the length is 6 m less than three times the width. Find the dimensions of the recta
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Answer:

Step-by-step explanation:

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Answer:

Step-by-step expl1

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3 years ago
What is 2(5+34-67/45*43)^2 equal to?
Fittoniya [83]

The value of the give expression is  \frac{313}{748845} OR 4.18 × 10⁻⁴

<h3>Evaluating an Expression</h3>

From the question, we are to determine the value of

2(5+34-67/45*43)^2

This can be written as

2 (\frac{5+34-67}{45 \times 43 })^{2}

First, we will simplify the bracket

2 (\frac{-28}{1935 })^{2}

Then, we get

2 \times \frac{-28}{1935 }\times \frac{-28}{1935 }

= \frac{1568}{3744225}

= \frac{313}{748845} OR 4.18 × 10⁻⁴

Hence, the value of the give expression is  \frac{313}{748845} OR 4.18 × 10⁻⁴

Lear more on Evaluating an expression here: brainly.com/question/23133222

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