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3 years ago

What is the math definition for 'counterexample'? When is counterexample used?

1 answer:

7 0

A counterexample is something that proves a statement, or equation, wrong. A counterexample is used in math when someone creates a theorem, writes an equation, or creates a new rule and someone proves it to be false.

For Example:
Let's say that I said an even number plus an odd number always equals an even number. A counterexample of that would be 4 + 5 = 9, because 9 is odd, therefore proving the statement wrong.

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Which product is negative

Romashka [77]

One thing for sure it is not b,d,c its a

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3 years ago

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10. JKLM is a rhombus KLN is a triangle. Find MKN.

rjkz [21]

Answer:

65°

Step-by-step explanation:

JM = JK (all sides of a rhombus are equal)

Angle JKM = 25° (isosceles triangle)

Angle JKL = 50° (consecutive angles of rhombus)

Angle MKL = 25° (angle subtraction)

Angle MLK = 130° (opposite angles of a rhombus)

Angle KLN = 50° (angles on a straight line)

Angle LKN = 40° (angle sum of triangle)

Angle MKN = 65° (angle addition)

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1 year ago

PLEASE HELP I RLY NEED THIS! I BEG YALL PLEASE HELP ME !

GalinKa [24]

Answer:

The answer would be 30/13.

Step-by-step explanation:

Votes for the skating rink= 30

Votes for the bowling alley= 13

Ratio of the # of votes for skating TO the # of votes for the bowling alley= 30/13.

Hope this helps! :)

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2 years ago

Pls show me how u did it

eduard

Answer:

(2,1)

Step-by-step explanation:

This is because when you type the equations into desmos, this is the cordinate that they collide.

Hope this answers your question.

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2 years ago

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Diego has some money in his bank account before his summer job. He deposits the money form the summer job in his bank account an

Amanda [17]

Answer: i will say About $23.77 per hour.

Step-by-step explanation:

i hope this help btw good luck

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3 years ago