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nikklg [1K]
3 years ago
7

What is the area of a circle with the equation (x - 3)^2 + (y + 2)^2 = 64

Mathematics
1 answer:
saul85 [17]3 years ago
4 0

Answer:

200.96 square units

Step-by-step explanation:

(x - 3)^2 + (y + 2)^2 = 64\\(x - 3)^2 + (y + 2)^2 = 8^{2} \\equating \:it\: with\\(x - h)^2 + (y -k)^2 = r^{2}\\we\:find;\\r^{2} =8^{2}\\\therefore radius\: (r) = 8 units\\Area\: of\: circle\\=\pi r^{2} \\=3.14\times8^2\\=3.14\times 64\\=200.96 \:units^{2}

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Step-by-step explanation:

An explanatory variable is a type of independent variable. An explanatory variable is that variable that explains changes in another variable. It can be anything that might affect the response variable. The explanatory variable is used to predict or explain differences in the response variable. In an experimental or research study, the explanatory variable is the variable that is manipulated by the researcher.

From the information given,

Explanatory variable: Extra support by faculties.

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From the question above,

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Confounding Variable: Ability of students to get passing grades.

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