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Vikentia [17]
3 years ago
9

Please answer and if right i will mark brainliest

Mathematics
1 answer:
Lapatulllka [165]3 years ago
6 0

Answer:

Your answer is D.

Step-by-step explanation:

Your answer is D.

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At a competition with 7 runners, medals are awarded for first, second, and
il63 [147K]

Answer:

Option A - Permutation; number of ways = 210

Step-by-step explanation:

Given : At a competition with 7 runners, medals are awarded for first, second, and  third places. Each of the 3 medals is different.

To find : How many ways are there to  award the medals?        

Solution :

There are 7 runners but medals are three.

The first runner up got first medal as one is locked.

The second runner up got second medal as second is locked.

The third runner up got the third medal.

So, There is a permutation.

Number of ways to award the medals is ^7P_3

We know, ^nP_r=\frac{n!}{(n-r)!}

Substitute the values,

^7P_3=\frac{7!}{(7-3)!}

^7P_3=\frac{7\times 6\times 5\times 4!}{4!}

^7P_3=210

Therefore, Option A is correct.

Permutation; number of ways = 210

6 0
3 years ago
3 out of five picks are orange . If 12 picks are orange , how many picks are there in all?
tekilochka [14]

20 picks in total .

8 0
3 years ago
What's the answer???
blsea [12.9K]
14/16 or anything like that
3 0
3 years ago
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100 POINTS
JulijaS [17]

Answer:

Small one is 4ft larger one is 12ft

4 0
2 years ago
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ANSWER ASAP!!!<br> PLS HELP. <br> ANSWER BOTH QUESTIONS FOR ALL POINTS.
iVinArrow [24]

Answer:

128°

Step-by-step explanation:

x + 154° + 78° = 360° {being complete turn}

x + 232° = 360°

x = 360° - 232°

x = 128°

8 0
3 years ago
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