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tekilochka [14]
3 years ago
9

What is the probability that a 13-card bridge hand contains all cards from the same suit?

Mathematics
1 answer:
slega [8]3 years ago
4 0
The total number of 13-card hands that can be dealt is 52C13. Four of these are of the same suit. Therefore the required probability is given by:
\frac{4}{52C13}= 6.3\times 10^{-12}
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The scale of a map is 1 inch: 250 miles. City A is 378 miles from City B. To the nearest tenth, how far is its distance on the m
juin [17]
This is a proportion question. We can express this as an equation where the answer is x:

\frac{1}{250} = \frac{x}{378}

From there, you can just cross-multiply and divide to get:

\frac{1 * 378}{250}

A tenth of 250 is 25, so this is roughly \frac{375}{250} or \frac{17}{10}, so it'll be approximately 1.7 inches on the map.
6 0
4 years ago
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Factorise fully 4x-x³​
lianna [129]

Answer:

x(2 - x)(2 + x)

8 0
3 years ago
In a function, an input can have more than one output. True Or False ??
Fudgin [204]
False. For every x in the function's domain, f(x) describes the one single output. 
7 0
4 years ago
Lindsey Wilson was the top scorer in a women's professional basketball league for the 2006 regular season, with a total of 814 p
baherus [9]

Answer:

The number of free throws, two-point throw, and three-point throw are 135, 173, and 111 respectively.

Step-by-step explanation:

Let x,y, and z are the numbers of two-point field goals, numbers of three-point field goals, and the number of free-throws (one-point goal) respectively.

The total points= 814

\Rightarrow 2x+3y+z=814\;\cdots(i)

As the number of two-point  goals was 49 less than double the number of three-point field goals she made.

\Rightarrow x=2y-49 \;\cdots(ii)

Again, the number of free goals was 38 less than the number of two-point field goals she made.

\Rightarrow z=x-38\;\cdots(iii)

From equations (i) and (iii)

2x+3y+x-38=814

\Rightarrow 3x+3y=852

\Rightarrow x+y=284

\Rightarrow 2y-49+y=284 [using equation (ii)]

\Rightarrow 3y=333

\Rightarrow y=111

From equation (ii),

x= 2\times111-38=173

From equation (iii),

z=173-38=135.

Hence,

The number of free throws, z= 135

The number of two-point throw, x=173

The number of three-point throw, y=111.

3 0
3 years ago
A person runs 1 4/5 miles in 1/5 of an hour determine how many miles they are running per hour
asambeis [7]
Multiply 1 4/5 by 5
9/5 * 5/1 = 45/5 = 9 miles
8 0
3 years ago
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