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2 years ago

Decide whether the following scenario is an observational,

Mathematics

1 answer:

VMariaS [17]2 years ago

4 0

The scenario is an observational study, done by the teacher.

The correct option is (B)

<h3>What is Observational study?</h3>

Firstly, A type of study in which individuals are observed or certain outcomes are measured. No attempt is made to affect the outcome.

Survey is defined as the act of examining a process or questioning a selected sample of individuals to obtain data about a service, product, or process.

Experimental research, also called experimentation, is research conducted using a scientific approach using two or more variables.

If we look at the question, the teacher was trying to do the observational study. By observing the students answer.

Learn more about Observational Study here:

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The solution to the equation (2/3)x - 4 = 6 is x = -3

castortr0y [4]

yes

2/3 (-3) -4 = 6

2--4 = 6

6= 6

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3 years ago

Min-Jee is planting two rectangular flower beds. One bed is 2.78 feet by 4.81 feet, and the other bed is 2.78 feet by 5.61 feet.

shusha [124]

Answer: $(2.78+4.81)(2.78+5.61)$

Step-by-step explanation:

<h3> The complete exercise is attached.</h3><h3></h3>

The area of a rectangle can be calculated with this formula:

$A=lw$

Where "l" is the lenght and "w" is the width.

Then, you can notice that it can be obtained by multiplying the dimensions of the rectangle.

Knowing this, you can determine that the total area of the two flowers bed can be obtained by adding the products of their dimensions.

Since one of the rectangular flower bed is 2.78 feet by 4.81 feet and the other bed 2.78 feet by 5.61 feet, you can write the following expression to find the total area (in square feet)of the two beds:

$2.78*4.81 +2.78*5.61$

If you factor out 2.78:

$2.78(4.81 +5.61)$ or $(4.81 +5.61)2.78$

Therefore, the expression that does not represent the total area in square feet of the two beds, is:

$(2.78+4.81)(2.78+5.61)$

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Step-by-step explanation:

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