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VARVARA [1.3K]
3 years ago
13

Please help if you know the answer please!

Mathematics
2 answers:
quester [9]3 years ago
7 0
36 I believe.....................
mash [69]3 years ago
5 0

Answer:

9

Step-by-step explanation:

We know that the perimeter is 30.

2 x 6 is 12 and 30 - 12 is 18. We subtract 12 because we want to know the other sides

18 is the length of the remaining sides so we just divide by 2 and we get 9.

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"The counting rule that is used for counting the number of experimental outcomes when n objects are selected from a set of N obj
Liula [17]

<u>Options</u>

  • Counting rule for permutations
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  • Counting rule for combinations
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Answer:

(C)Counting rule for combinations

Step-by-step explanation:

When selecting n objects from a set of N objects, we can determine the number of experimental outcomes using permutation or combination.

  • When the order of selection is important, we use permutation.
  • However, whenever the order of selection is not important, we use combination.

Therefore, The counting rule that is used for counting the number of experimental outcomes when n objects are selected from a set of N objects where order of selection is not important is called the counting rule for combinations.

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3 years ago
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3 years ago
Question:4x²-9 <br>answer:​
statuscvo [17]

Step-by-step explanation:

4x^2-9

=(2x)^2 -3^2

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Hope this helps you.

3 0
3 years ago
Write the explicit formula for the sequence. 27, 18, 12, 8,.... A) an = 9(2/3)(n-1) B) an = 27(3/2)(n-1) C) an = 27(1/3)(n-1) D)
Nikitich [7]

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Step-by-step explanation:

5 0
3 years ago
ben has 3 times as many guppies as goldfish.  If he has a total of 20 fish, how  mauy guppies does he have
Nitella [24]
x-the  \ number \ of \ goldfishes \\ 3x-the \ number \ of \ guppy \ fishes \\\\ x+3x=20 \\\\ 4x=20 \\\\ \boxed{x=\frac{20}{4}=5 } \\\\ 3*5\to\boxed{15 \ guppy \ fishes}
7 0
3 years ago
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