3 years ago

Use Euler’s Formula to find the missing number. Edges: 43 Faces: 25 Vertices: ?

Mathematics

2 answers:

Ymorist [56]3 years ago

7 0

The answer is D, 23.

babunello [35]3 years ago

6 0

Answer:

Vertices = 20

Step-by-step explanation:

Using the Euler's formula:

V - E + F = 2 ....[1]

where,

E is the number of Edges

V is the number of Vertices

F is the number of Faces.

As per the statement:

Edges: 43

Faces: 25

⇒E = 43 and F = 25

Substitute in [1] we have;

$V-43+25 = 2$

⇒ $V-18 = 2$

Add 18 to both sides we have;

V = 20

Therefore, the number of vertices is, 20

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2 years ago

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Determine whether the origin is included in the shaded region and whether the shaded region is above or below the line for the g

kati45 [8]

Answer:

Option: D is correct.

Step-by-step explanation:

since we are given a inequality as:

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Clearly from the graph of the following inequality we could see that the origin is included in the shaded region and the shaded area is below the line.

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Hence, option D is true.