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3 years ago

Is 0.63 a rational number

Mathematics

2 answers:

jasenka [17]3 years ago

5 0

Answer:

It is a rational number because it can be expressed as a fraction in the form of 7/11 explanation:

kolbaska11 [484]3 years ago

3 0

Yes it is a rational number because we can write this in the form of p/q we can write 0.63=63/100

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If a polyhedron has 5 faces and 7 vertices, then it must have how many edges? Please show step-by-step work

Juli2301 [7.4K]

Answer:

10 edges

Step-by-step explanation:

we know that

The Euler's formula state that: In a polyhedron, the number of vertices, minus the number of edges, plus the number of faces, is equal to two

$V - E + F = 2$

in this problem we have

$V=7\\E=?\\F=5$

substitute the given values

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solve for E

Combine like terms in the left side

$12 - E = 2$

subtract 12 both sides

$- E = -10$

Multiply by -1 both sides

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Step-by-step explanation:

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