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stiv31 [10]
3 years ago
9

What percent of 78 = 39?

Mathematics
1 answer:
S_A_V [24]3 years ago
3 0
39/78 = .5 = 50%
...................
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Find the unknown side (w) of the rectangular solid. Please help..
Charra [1.4K]

Answer:

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Step-by-step explanation:

8×13=104

208÷104=2

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3 years ago
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Miguel is playing a game in which a box contains four chips with numbers written on them. Two of the chips have the number 1, on
Iteru [2.4K]

Answer:

P(X_i=2) =\dfrac{1}{6}

P(X_i=-1) =\dfrac{5}{6}

Step-by-step explanation:

Given the numbers on the chips = 1, 1, 3 and 5

Miguel chooses two chips.

Condition of winning: Both the chips are same i.e. 1 and 1 are chosen.

Miguel gets $2 on winning and loses $1 on getting different numbers.

To find:

Probability of winning $2 and losing $1 respectively.

Solution:

Here, we are given 4 numbers 1, 1, 3 and 5 out of which 2 numbers are to be chosen.

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The total number of ways of selecting r numbers from n is given as:

_nC_r = \frac{n!}{r!(n-r)!}

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So, total number of ways = _4C_2  = \frac{4!}{2!\times 2!} = 6

Total number of favorable cases in winning = choosing two 1's from two 1's i.e. _2C_2 = \frac{2!}{2! 0! } = 1

Now, let us have a look at the formula of probability of an event E:

P(E) = \dfrac{\text{Number of favorable ways}}{\text{Total number of ways}}

So, the probability of winning.

P(X_i=2) =\dfrac{1}{6}

Total number of favorable cases for -1: (6-1) = 5

So, probability of getting -1:

P(X_i=-1) =\dfrac{5}{6}

Please refer to the attached image for answer table.

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3 years ago
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REY [17]

Answer:

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Step-by-step explanation:

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9.A couple just had twin boys, but they can't decide between the names Mike, Mark, Peter, Paul, Sam, and Sonny. If the couple ra
Sever21 [200]

Answer:

The first answer is 1/3 the second answer is also 1/3

Step-by-step explanation:

If you count the number of names there are and take two out that would round down from 2/6 to 1/3. The answer is the same for both questions.

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3 years ago
Classify this expression: -2x
zvonat [6]

Answer:

A Linear Expression is the correct choice for this equation

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2 years ago
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