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2 years ago

In a horse race, how many different finishes among the first 3 places are possible if 7 horses are running? (Exclude ties)

Mathematics

1 answer:

kodGreya [7K]2 years ago

3 0

Answer:

7 x 6 x 5 = 210

Step-by-step explanation:

its a combination's problem.

7 horses are eligible for first place.

6 of those are eligible for 2nd given that one of the 7 finished first.

similarly 5 of the remaining are eligible for 3rd place given 2 horses have taken the first 2 spots.

therefore 7 x 6 x 5 possible combinations = 210 combinations.

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Sla square field has an area of 12,382m², calculate it's side length. show your work

shepuryov [24]

Answer:

side = 111.274........

Explanation:

area of square = side × side

means we're finding area by finding square of side.

now, we're finding side. so, we'll do the opposite of square, which means square root.

$side = \sqrt{area}$

so,

$side = \sqrt{12382}$

side = 111.274........

please mark BRAINLIEST!

3 0

1 year ago

1) AU (C - B) =

torisob [31]

Answer:

$A \cup (C-B) = (A \cup C) \cap (A \cup B^c)\\A \cup (B \cap C) = (A \cup B) \cap (A \cup C) \,\,\, \text{Here you use double inclusion.}\\A \cup B \cup C = A \cup (B \cup C)\\B^c \cap (A-C) = (B^c - C) \cap A\\(B \cap C) - A = (B-A)\cap C\\C-(A\cup B) = (C - A )\cap B\\A^c \cap (B \cap C) = ( A^c \cap B) \cap C$

Step-by-step explanation:

$A \cup (C-B) = A \cup (C \cap B^c) = (A \cup C) \cap (A \cup B^c)\\A \cup (B \cap C) = (A \cup B) \cap (A \cup C) \,\,\, \text{Here you use double inclusion.}\\A \cup B \cup C = (A \cup B ) \cup C = A \cup (B \cup C)\\B^c \cap (A-C) = B^c \cap (A \cap C^c) = (B^c \cap C^c) \cap A = (B^c - C) \cap A\\(B \cap C) - A = (B \cap C) \cap A^c = (B \cap C) \cap A^c = (B \cap A^c)\cap C = (B-A)\cap C\\C-(A\cup B) = C \cap (A\cup B)^c = C \cap (A^c \cap B^c ) = (C \cap A^c )\cap B^c = (C - A )\cap B\\$

$A^c \cap (B \cap C) = ( A^c \cap B) \cap C$

3 0

3 years ago

A jeweler buys a ring from a jewelry maker for $125. He marks up the price by 135% for sale in his store. What is the selling pr

Elis [28]

Hey there!

First, you would multiply 125*135%= 168.75
Then you would add 125 to 168.75 and you would get 293.75.
Next, you would multiply 293.75*7.5%= 22.03
Finally, add 22.03 to 293.75 and your answer is...

$315.78

8 0

3 years ago

I need help please!!!!

Talja [164]

Answer:

c - 8.9

Step-by-step explanation:

2.3^2+ 8.6^2

✓79.25

8.9

3 0

2 years ago

Alicia drove at a constant speed and traveled 182.4 miles in 3 hours. what is her rate in miles per hour

mart [117]

Speed = distance / time

Speed = 182.4 / 3

Speed = 60.8 miles per hour.

4 0

2 years ago

In a horse​ race, how many different finishes among the first 3 places are possible if 7 horses are​ running? (Exclude​ ties)

In a horse race, how many different finishes among the first 3 places are possible if 7 horses are running? (Exclude ties)