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4 years ago

Which graph represents the piecewise-defined function?

Mathematics

1 answer:

Aleks [24]4 years ago

8 0

Answer:

Graph at the bottom right.

Step-by-step explanation:

From the given piecewise function,

1). y = -2 if x ≤ 1

An arrow representing this function will be parallel to x-axis with a dark circle at x = 1.

2). y = 1 if 1 < x ≤ 2

A straight line representing this function will be parallel to x-axis with a dark circle at x = 2 and a hollow circle at x = 1.

3). y = 3 if x > 2

An arrow representing the function will be parallel to the x-axis having one end as a hollow circle at x = 2.

Therefore, Graph at the bottom right will be the answer.

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Given:

Volume of a sphere is $\dfrac{28}{3}$ times the surface area.

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Solution:

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Surface area of a sphere:

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Where, r is the radius of the sphere.

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$V=\dfrac{28}{3}\times A$

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Using (ii), the surface area of the sphere is:

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