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3 years ago

-0.2857 as a fraction

Mathematics

2 answers:

a_sh-v [17]3 years ago

6 0

-2857/10000 is the answer.

Nina [5.8K]3 years ago

3 0

When you convert 0.2857 to a fraction it would be 2857/10000 hope this helps!

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I need to find the measure of angle LMN.

sergiy2304 [10]

Notice the circle, the radius NM or ML is 5, and the arc the angle makes is 14.3 cm, thus

$\bf \textit{arc's legnth}\\\\
s=\cfrac{\pi \theta r}{180}\quad 
\begin{cases}
r=5\\
s=14.3\\
\theta =angle~in\\
\qquad degrees
\end{cases}\implies 14.3=\cfrac{\pi \theta 5}{180}\implies \cfrac{14.3\cdot 180}{5\pi }=\theta$

3 0

3 years ago

Consider a set of one-dimensional points: 6, 12, 18, 24, 30, 42, 48.

Vinvika [58]

Answer:

1) With initial centroids 10-40, final clusters are

first cluster (6,12,18,24,30)

second cluster (42,48)

And the Sum of Squared Errors (SSE) for the clustering result is 378

2) With initial centroids 10-20, final clusters are

first cluster (6,12,18,24)

second cluster (30,42,48)

And the Sum of Squared Errors (SSE) for the clustering result is 348

Step-by-step explanation:

K-means works as follows

the points will be clustered according to their distance to the centroids.
Then centroids are updated as the cluster means.
This process continues until clusters doesn't change anymore

1) initial centroids 10-40

first cluster (6,12,18,24) mean:15

second cluster (30,42,48) mean:40

new centroids 15-40

first cluster (6,12,18,24,30) mean:18

second cluster (42,48) mean:45

final centroids 18-45

first cluster (6,12,18,24,30) mean:18

second cluster (42,48) mean:45

Sum of Squared errors = $(18-6)^{2}$ + $(18-12)^{2}$ + $(18-18)^{2}$ + $(18-24)^{2}$ + $(18-30)^{2}$ + $(45-42)^{2}$ + $(45-48)^{2}$ =378

2)initial centroids 10-20

first cluster (6,12) mean:9

second cluster (18,24,30,42,48) mean:32.4

new centroids 9-32.4

first cluster (6,12,18) mean:12

second cluster (24,30,42,48) mean:36

new centroids 12-36

first cluster (6,12,18,24) mean:15

second cluster (30,42,48) mean:40

final centroids 15-40

first cluster (6,12,18,24) mean:15

second cluster (30,42,48) mean:40

Sum of Squared errors = $(15-6)^{2}$ + $(15-12)^{2}$ + $(15-18)^{2}$ + $(15-24)^{2}$ + $(40-30)^{2}$ + $(40-42)^{2}$ + $(40-48)^{2}$ =348

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3 years ago

Which of the following completes this proportion? A KL B PQ C RS D PS

maksim [4K]

Answer:

a kl

Step-by-step explanation:

i know

7 0

2 years ago

60 cartons is what percent of 10 cartons?

dlinn [17]

Percent means parts out of 100
x%=x/100

'of' means mulitply

60 is what percent of 10

60=x% times 10
60=x/100 times 10
60=10x/100
60=x/10
multiply both sides by 10
600=x

60 cartons is 600% of 10

5 0

3 years ago

What is the exact circumference of a circle with a diameter of 15 in?

nexus9112 [7]

Circumferece = pi•diameter
C=pi•15 inches

6 0

4 years ago