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DedPeter [7]
3 years ago
9

What is the original cost of a skateboard that was discounted by 35% and now sells for $92.95?

Mathematics
2 answers:
Elenna [48]3 years ago
6 0
The original price was $152.23.
serg [7]3 years ago
3 0

Answer:

The answer should be $143

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The base of a pyramid is a square whose perimeter is 936936 m. what is the length of each side of this​ square?
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936936 is the perimeter and perimeter of a square is 4 times the length of one of the sides. therefore, you divide 936936 by 4 and get your answer, which is 234234.
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There are 7 acts in a talent show.
lara31 [8.8K]

Answer:

<u><em></em></u>

  • <u><em>Event A: 1/35</em></u>
  • <u><em>Event B: 1/840</em></u>

<u><em></em></u>

Explanation:

<u>Event A</u>

For the event A, the order of the first 4 acts does not matter.

The number of different four acts taken from a set of seven acts, when the order does not matter, is calculated using the concept of combinations.

Thus, the number of ways that the first <em>four acts</em> can be scheduled is:

          C(m,n)=\dfrac{m!}{n!(m-n)!}

         C(7,4)=\dfrac{7!}{4!(7-4)!}=\dfrac{7!}{4!(3)!}=35

And<em> the number of ways that four acts is the singer, the juggler, the guitarist, and the violinist, in any order</em>, is 1: C(4,4).

Therefore the<em> probability of Event A</em> is:

           P(A)=1/35

Event B

Now the order matters. The difference between combinations and permutations is ordering. When the order matters you need to use permutations.

The number of ways in which <em>four acts </em>can be scheculed when the order matters is:

           P(m,n)=\dfrac{m!}{(m-n)!}

         P(m,n)=\dfrac{7!}{(7-4)!}=P(m,n)=\dfrac{7!}{4!}=840

The number of ways <em>the comedian is first, the guitarist is second, the dancer is third, and the juggler is fourth</em> is 1: P(4,4)

Therefore, <em>the probability of Event B</em> is:

            P(B)=1/840

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Some steps to rewrite the expression x3 − 4x + x2 − 4 as a product of three factors are shown below:
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I know step 5 is (x-2)(x+2)(x+1)
But I don't know what step 4 is. 
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There are 12 boys and 12 girls participating in a quiz competition. Find the probability that a boy will win this competition an
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1/2 it's a fifty fifty unless the guys are complete idiots
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What does p equal when p=210e^(0.0069*20)?
Korolek [52]
<span>p=210e^(0.0069*20)
'e' is a mathematical constant equal to 2.718281828459
</span>
<span>0.0069*20 = .138

e^.138 =
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<span>2.718281828459^.138 =
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<span> <span> <span> 1.1479755503 </span> </span> </span>
210 * <span>1.1479755503 =
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<span> <span> <span> 241.074865563 </span> </span> </span>
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