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True [87]
3 years ago
10

10. Evaluate the expression (ab) for a = 2 and b = 5.​

Mathematics
2 answers:
Sveta_85 [38]3 years ago
5 0

Answer:

10

Step-by-step explanation:

(5*2)=10

stepan [7]3 years ago
3 0

Answer:

10

Step-by-step explanation:

Since a = 2 and b = 5, we need to multiply them to get the answer for (ab).

(ab) = 2(5) = 10

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Simplify. .
garri49 [273]

Answer:

6y+4

Step-by-step explanation:

-(2x-3y) +5x +2 -3x +3y +2

(-2x -3x +5x) (3y +3y)  (2 +2)

0 +6y +4

6y +4

6 0
3 years ago
Each of 5 boys randomly chooses a watch from 12 different styles. What is the probability that at least 2 boys choose the same t
aleksley [76]

Answer:

Ok. So we have 12 different styles of watches to choose from, so that means that the total number of combinations of styles for 5 boys is 12*12*12*12*12, since each boy has his pick of 12 options.

The way to answer this question is by way of the complementary rule: We want the number of ways that the boys can all have different styles. So the first boy to pick has 12 options available to him, the second boy has 11 options available to him, the 3rd boy has 10 options available to him, so on and so forth.

So the probability that the boys all have different watches is (12*11*10*9*8)/12^5= .3819.

To find the probability that at least two boys have the same style would just be 1 -.3819 = 6181

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2 years ago
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Flura [38]

I believe the answer should be 1953

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Molodets [167]

Step-by-step explanation:

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4 0
3 years ago
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Sophie [7]

Answer:

1520.5

Step-by-step explanation:

The area of a circle is pi times r^2. r stands for radius. r, which is 22 squared is 484, Multiply that with pi and you have your answer.

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