3 years ago

Which shape could be thought of as being created by stacking congruent polygons?

1 answer:

7 0

Any 3-dimensional shape that has a polygon base and a consistent height.

For example: a cube, a rectangular prism. (Note: cylinder does not work due to non-polygon shape.)

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Here is a uniform probability distribution.

Darya [45]

a) $P(4\le X\le6)=\dfrac25$ because it is equal to the area of the shaded region between X=4 and X=6, and the probability that X falls within some interval is given by the area under the PDF.

b) $a=3$ because the shaded region is a rectangle of height 1/5 (by virtue of X following a uniform distribution over the interval [2, 7], which has length 5).

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3 years ago

Which is .333 written in its simplest fraction form?

Mama L [17]

D. 333/1000 good luck

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3 years ago

Please help brainlist!

insens350 [35]

Answer:

4/8 - 2/8 = 2/8 = 1/4

Step-by-step explanation:

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3 years ago

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Find all integers $n$ for which $\frac{n^2+n+1}{n-1}$ is an integer.

Grace [21]

$\dfrac{n^2+n+1}{n-1}=\dfrac{(n-1)^2+3(n-1)+3}{n-1}=n-2+\dfrac3{n-1}$

The remainder term $\dfrac3{n-1}$ will never vanish, and will always be rational as long as the denominator is not 1, 3, or -3.

$n-1=1\implies n=2$
$n-1=3\implies n=4$
$n-1=-3\implies n=-2$

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3 years ago

Kathy rolled a number cube that has sides labeled 1 to 6. What is the probability that she rolled a 2 or a 4?

kow [346]

It would be 2/6 or 1/3

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3 years ago