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3 years ago

7

A standard deck of cards has 52 members consisting of 4 suits each with 13 members (2, 3, …, 10, j, q, k, a). five cards are dea

lt from the randomly mixed deck. what is the probability that all cards are the same suit

1 answer:

Eddi Din [679]3 years ago

7 0

P(5 cards are from same deck) = 4(13/52)(12/51)(11/50)(10/49)(9/48) = 33/16660

Answer: 33/16660

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Number 7 what would all answers be

Over [174]

So... notice the picture below, that's P(x)

so $\bf \qquad \qquad \textit{vertex of a parabola}\\ \quad \\
y = {{ a}}x^2{{ +b}}x{{ +c}}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)$

so.. when the quantity is $\bf -\cfrac{{{ b}}}{2{{ a}}}$ , is when the profit $\bf {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}$ is the highest

after that, as you can see from the graph, it goes back down

3 0

3 years ago

PLEASE ANSWER ASAP!!! SHOW ALL THE STEPS.

fenix001 [56]

Answer:

For the first question $x = 4\\ y = -1$ and

For the second question $x = 0.5\\ y = -1$

Step-by-step explanation:

Given:

1.

x - 3y = 7

3x + 3y = 9

2.

8x+ 3y = 1

4x + 2y = 0

Elimination method :

In the elimination method we need to make the coefficient of x or the coefficient of y same in both the equation so by adding or subtracting we can eliminate the x term or the y term.

Then substitute that values which you will get on eliminating in any equation you will get the corresponding value.

For the first question, the y coefficient is same hence by adding both the equation we can eliminate 3y term. so on solving we get

$(x - 3y) + (3x + 3y) = 7 + 9\\4x = 16\\x = \frac{16}{4}\\x = 4$

Now substitute X equal to 4 in equation x -3y = 7 we get

$4 - 3y = 7\\-3y = 7 - 4\\-3y = 3\\y = \frac{3}{-3}\\ y = -1\\$

This way we have x is equal to 4 and y is equal to -1 for question number 1.

For the second question, we will make X coefficient same in the second equation that is multiplying by 2 to the equation 4x + 2y = 0 then we get

$8x + 4y = 0\\$

Now the coefficient of x term become same now we will subtract the two equations that is 8x + 3y = 1 and 8x + 4y =0 we get

$(8x + 3y) - (8x + 4y) = 1 - 0\\3y - 4y = 1\\ -y = 1\\y = -1$

Now substitute y equal to -1 in equation 8x +3y = 1 we get

$8x + 3\times -1 = 1\\8x - 3 = 1\\8x = 1 + 3\\8x = 4\\x = \frac{4}{8}\\ x = 0.5\\$

This way we have x is equal to 0.5 and y is equal to -1 for question number 2.

3 0

3 years ago

Find the perimeter of the triangle

dmitriy555 [2]

Answer:

26 units

Step-by-step explanation:

8 0

4 years ago

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Write the sentence as an equation.<br> 240 is equal to the total of 386 and b<br> Submit

bulgar [2K]

Answer:

240=386+b

Step-by-step explanation:

So ¨equal to the total of ¨ would mean that a number is the same as the sum of some other numbers.

In this case it would mean that 240 is the same as the sum of 386 and b, which would mean it equals itself.

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3 years ago

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Jack is 1.75 m tall and casts a shadow 2.25 m long. At the same time, a statue casts a

Roman55 [17]

9.75 M i think is the correct answer

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4 years ago