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Zigmanuir [339]
3 years ago
13

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

Mathematics
1 answer:
LenaWriter [7]3 years ago
7 0
A <u>counterexample</u> 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.

<u>For Example:</u>
Let's say that I said <em>an even number plus an odd number always equals an even number</em>. A counterexample of that would be 4 + 5 = 9, because 9 is odd, therefore proving the statement wrong.
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At a football game, Ben purchased x hot dogs and y drinks. He spent a total of $30.70. The equation below describes the relation
Yuki888 [10]
So I had to reread this about 3 times before it finally clicked, I've never done a problem like this before. An ordered pair is organized like so: (x-coordinate, y-coordinate) Meaning x=4 and y=6. If x=hot dogs and y=drinks then this means that Ben purchased 4 hot dogs and 6 drinks at the game. 

Hope this helps!! (:
6 0
3 years ago
351,875 rounded to nearest hundred thousand
storchak [24]
The answer would be 400,000.
4 0
3 years ago
Read 2 more answers
What is the derivative of f(x)= 1/5(x^2 + 2)^5/2?
vlabodo [156]

Answer:

x(x^2+2)^3/2

Step-by-step explanation:

y'=1/2(x^2+2)^3/2.2x

= x(x^2+2)^3/2

8 0
2 years ago
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Can someone help me please ? Thanks!
Sever21 [200]
It would be 6.01 so in other words B...
4 0
4 years ago
Suppose you have entered 115-mile biathlon that consists of a run and a bicycle race. During your​ run, your average velocity is
Maksim231197 [3]

Answer:

The distance of the run was 27 miles and the distance of the bicycle race was 88 miles.

Step-by-step explanation:

Since I have entered 115-mile biathlon that consists of a run and a bicycle race, and during my run, my average velocity is 9 miles per hour, and during my bicycle race, my average velocity is 22 miles per hour , and I finish the race in 7 hours, to determine what is the distance of the run and what is the distance of the bicycle race, the following calculations must be performed:

7 x 22 + 0 x 9 = 154

5 x 22 + 2 x 9 = 128

4 x 22 + 3 x 9 = 115

Therefore, the distance of the run was 27 miles and the distance of the bicycle race was 88 miles.

3 0
3 years ago
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