All categories

3 years ago

Which counterexample shows that the conjecture "All animals that can fly are birds" is false?

2 answers:

8 0

B would be incorrect as it is not a counterexample to the claim. C would be incorrect as a chipmunk is not a bird. And D would be incorrect as the claim says "All animals that can fly are birds" it doesn't say "every bird" or "all birds can fly"
So A is the logical choice and according to what Jimthompson5910 said "bats are one animal where they can fly but they aren't birds."

QveST [7]3 years ago

3 0

It seems like you forgot to post the answer choices. However, bats are one animal where they can fly but they aren't birds. So this is one counter-example to prove the claim false. Another example would be any flying insects.

You might be interested in

HELP TIMER Write the equation of a hyperbola centered at the origin with x-intercept +/- 4 and foci of +/-2(squareroot 5)

nikitadnepr [17]

Answer:

$\frac{x2}{a} - \frac{y2}{b2} = 1$

Step-by-step explanation:

A hyperbola is the locus of a point such that its distance from a point to two points (known as foci) is a positive constant.

The standard equation of a hyperbola centered at the origin with transverse on the x axis is given as:

$\frac{X2}{16} - \frac{b}{4} = 1$

The coordinates of the foci is at (±c, 0), where c² = a² + b²

Given that a hyperbola centered at the origin with x-intercepts +/- 4 and foci of +/-2√5. Since the x intercept is ±4, this means that at y = 0, x = 4. Substituting in the standard equation:

I don't feel like explaining so...

a. = 4

The foci c is at +/-2√5, using c² = a² + b²:

B = 2

Substituting the value of a and b to get the equation of the hyperbola:

$\frac{x2}{a2} - \frac{y2}{b2} = 1$

$\frac{x2}{16} - \frac{b2}{4} = 1$

4 0

2 years ago

The sum of b and 6 is 19

valentina_108 [34]

Answer:

b+6=19

Step-by-step explanation:

by the words you can write your equation if you are looking to solve your answer would be 13

5 0

2 years ago

What is 3x10)+(3456/3629) + (2341x123) + (123 infinity x 90) i will give branliest

Shkiper50 [21]

Answer:

∞

Step-by-step explanation:

I assume you meant 3×10 + 3456/3629 + 2341×123 + 123 ∞×90 and x is multiplication and not a variable.

7 0

1 year ago

Quick! Need the answer

zvonat [6]

Replace the x in the equation with the given value of x and you will find that the 3rd equation is corret.

F(X) = 4(1/2)^X

4(1/2)^-2 = 4 * 4 = 16

6 0

2 years ago

JJ buys a video game for $50.00. If the sales tax is 8.25%

Galina-37 [17]

Answer:

$54.26

Step-by-step explanation:

Convert the percentage into a decimal by moving the decimal point 2 places to the left or divide by 100.

This will give you .0825.

Multiply this number by $50 and add it to it

6 0

2 years ago