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3 years ago

50 points!

Mathematics

1 answer:

Vanyuwa [196]3 years ago

7 0

Angles are formed by intersection of non-collinear lines, rays and planes.

Part A

1. Contradictory Example

A contradictory example to the given definition is that:

When the rays are collinear; the rays do not form an angle, but they form a line

2. A more accurate definition

A more accurate definition is that:

An angle is formed at the intersection of two non-collinear rays that have the same endpoint

Part B

Example of an undefined term

Undefined terms do not have a formal definition; an example is the plane.

A plane pertains to angles because it determines the parameter to be measured.

Read more about angles and undefined terms at:

brainly.com/question/1402901

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450

Step-by-step explanation:

Step 1:

18 × 25 = 450

Answer:

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3 years ago

Consider randomly selecting a student at a large university, and let A be the event that the selected student has a Visa card an

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Answer:

We have that $B = 0.3$ .

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Step-by-step explanation:

Event A:

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Event B:

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We have that:

$A = a + (A \cap B)$

In which a is the probability that a student has a Visa card but not a MasterCard and $A \cap B$ is the probability that a student has both these cards.