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Irina-Kira [14]
3 years ago
11

13 people are in a race. If there are no ties , in how many ways can the first 3 places be awarded?

Mathematics
1 answer:
Pepsi [2]3 years ago
6 0

Answer:

7

Step-by-step explanation:

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What is the sum of a rational and irrational number ?
statuscvo [17]
Hello I hope this helps.
The sum of a rational number and an irrational number is irrational." By definition, an irrational number in decimal form goes on forever without repeating (a non-repeating, non-terminating decimal). By definition, a rational number in decimal form either terminates or repeats.
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3 years ago
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Find KJL (5x-2) (9x-62)
KiRa [710]

Answer:

45x^2-328x+124

Step-by-step explanation:

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3 years ago
What is the area of the 50ft by 100ft yard?
mario62 [17]

Answer: 4410 ft^2

Step-by-step explanation:

To find the area of a square or rectangle, all you need to do is multiply the length times the width:

L × W = A

The lengh is 100, and the width is 50

100 × 50 = 5000

However, in this problem, we also have other shapes in the rectangle. To find the area of JUST the green, we need to subtract the areas of the two circles and small blue rectangle.

First, let's get the two circles over with. To find the area of a circle, use this formula:

A = πr^2      r is the radius, which in this case, is 6

A = π6^2

A = 113       This isn't the exact answer, the exact answer would be 113.0973...

Now let's multiply the area of one of those circles by 2, since we have 2 circles:

113 × 2 = 226

Finally, we have to find the area of the blue rectangle. This is simple, just use the formula from the very beginning:

26 × 14 = 364

The last thing to do is to subtract the areas of the two circles and blue rectangle from the area of the entire thing:

5000 - (226 + 364) = 4410 ft^2

4 0
3 years ago
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The weight of 72 books is 9 kg.what is the weight of 80 such books? How many such books would weigh 6kg?
Alex17521 [72]
9 divided by 72 = 0.125
0.125 is the weight of one book
0.125 times 80 = 10kg.
So 80 books weight 10kg.
72 divided by 9 = 8 books make up 1 kg.
8 times 6 =48
4 0
3 years ago
If you know how to this and can help that would be so great...also please take a look at my last question Thanks
Alik [6]

Answer:

im sorry i dont know

Step-by-step explanation:

8 0
3 years ago
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