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kondor19780726 [428]
3 years ago
5

PLEASEEE HELP :)))

Mathematics
1 answer:
8_murik_8 [283]3 years ago
3 0

Answer

Distance= root of (x1-x2)^2+(y1-y2)^2

X1=664

X2=901

Y1=22

Y2=-138

Step-by-step explanation:

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(a) Five

(b) Thirteenth

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We have the mean is 12.6 and

that 11 occurs 4 times, 12 occurs 7 times, 13 occurs 9 times, and 14 occurs f times.

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So we have

\frac{4(11)+7(12)+9(13)+f(14)}{20+f}=12.6

I'm going to simplify what I can on top.

\frac{245+14f}{20+f}=12.6

I'm going to write 12.6 as \frac{12.6}{1} because I want to cross multiply:

\frac{245+14f}{20+f}=\frac{12.6}{1}

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Distribute:

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There are five 14 years old.

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The mode is 13 because it is the most occurring

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There are 4 eleven yr olds.

There are 7 twelve yr olds.  That is 11 kids so far.

So the median has to be included in the 9 thirteenth yr olds.

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