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Kobotan [32]
3 years ago
14

What is a counter example to the conjecture: all balls are spheres?

Mathematics
1 answer:
Marizza181 [45]3 years ago
6 0
All balls are circles
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Janes age is 5 years less than 3 times her brothers age. Janes age is 11 minus her brothers age. How old is Jane?
ANEK [815]

You did not specify the brother's age, so I make a expression, <em>b</em> as the variable.

(3<em>b</em> + 5) - 11

Now do that with the brother age instead of the variable.

3 0
3 years ago
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Translation of the statement<br> "5 * a*a*c*a"
yawa3891 [41]
I'm sorry, do you have any more detail. i'm not sure what this means?
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3 years ago
Which formula can you use to find the area of a circle​
nata0808 [166]

Answer:

A = pi r^2

Step-by-step explanation:

The formula for area of a circle is given by

A = pi r^2

8 0
3 years ago
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A 0.40 kg bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy?
nalin [4]

Answer:

The correct answer is 12.8 J.

Step-by-step explanation:

To solve this problem, we must remember how to calculate the kinetic energy of an object.

The kinetic energy is represented by the formula K = 1/2 * m * v^2, where m represents the mass of the object and v represents the speed or velocity of the object.  If we plug in the given values into the formula, we get:

K = 1/2 * m * v^2

K = (1/2) * (0.40) * (8.0)^2

Our first step is to square the velocity.  After doing this step, we get the following:

K = (1/2) * (0.40) * (64)

Finally, we can perform the multiplication, to get:

K = 12.8

The unit for kinetic energy is joules, so the correct answer is 12.8 J.

Hope this helps!

8 0
3 years ago
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According to this property, x + 0 = x.
Mumz [18]
The identity property of addition states that the sum of any number and 0 is the original number.

so...x + 0 = x would be the identity property of addition (also called the additive identity)
3 0
3 years ago
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