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3 years ago

What is the theoretical probability of drawing a red king from a standard deck of cards?

Mathematics

1 answer:

galben [10]3 years ago

3 0

Answer:

1/26

Step-by-step explanation:

Out of the 52 total cards ,there are 2 red kings (hearts and diamonds), so the probability of a red king is 2/52 = 1/26

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The product of 15 and the sum of a number and 5 expression

Sedbober [7]

(15)(x+5) because product means multiply the two terms tigether

7 0

2 years ago

If Z is the centroid of ∆LMN,WZ=4,ZN=14, and ZY = 10, find each missing measure

jeyben [28]

Answer:

ZM = 8

WM = 12

XZ = 7

XN = 21

LZ = 20

Step-by-step explanation:

The centroid of a triangle is the point of intersection of the midpoint of the each of the three sides of a triangle. The centroid of a triangle is located inside the triangle and it is known as the center of gravity.

The centroid theorem for a triangle states that the centroid of a triangle is located at 2/3 of the distance from the vertex of the triangle of the middle of the opposite side.

ZM = (2/3)WM (centroid theorem)

Therefore: WZ = (1/3)WM

WM = 3WZ = 3 * 4 = 12

ZM = (2/3) * WM = 2/3 * 12 = 8

ZN = (2/3)XN (centroid theorem)

XN = (3/2)ZN = 3/2 * 14 = 21

XN = 21

XZ + ZN = XN

XZ + 14 = 21

XZ = 7

LZ = (2/3)LY (centroid theorem)

Therefore: ZY = (1/3)LY

LY = 3ZY = 3 * 10 = 30

LZ = (2/3) * LY = 2/3 * 30 = 20

7 0

2 years ago

Suppose that you and a friend are playing cards and you decide to make a friendly wager. The bet is that you will draw two cards

Dmitrij [34]

Answer:

Ok, the probability of winning is:

For the first draw, we have 13 diamonds in a 52 card deck, the probability of drawing a diamond is:

p1 = 13/52

for the second draw we have 12 diamonds and 51 cards in the deck, now the probability is:

p2 = 12/51

the total probability is equal to the product of the individual probabilities, this is:

P = p1*p2= (13/52)*(12/51) = 0.059

now, the expected value can be calculated as follows.

EV = (P1*X1 + P2*X2)

where P1 is the probabilty of event 1, and X1 is the event 1,

In this case X1 is the event of winning $29, then P1 = 0.059

X2 will be the event of loosing $4, so P2 = 1 - 0.059 = 0.941

Then the expected value for 1 round of the game is:

EV = (0.059*$29 - 0.941*$4) = -$2.05

So if you play 891 times, expected value of 891 times the expected value for 1 round, this is:

891*EV = 891*(-$2.05) = -$1826.55

So you loss around $1826.55

4 0

3 years ago

9 halves of a cupcake for my family plus extra for my 6 friends how many should I<br> buy.

krok68 [10]

Answer :- 7½ or 8 ( explained below)

Explanation:-

Given :-

9 halves for family
6 halves for friends

So in total :- 15 halves for both of them

It means :- 7½ cupcakes in total u required

if u can buy an half cupcake then u need to buy :- 7½

If u can't but an half cupcake then u need to buy :- 8

7 0

2 years ago

I NEED HELP ASAP!!!!!

zavuch27 [327]

√y

Step-by-step explanation:

The question given is;

$\frac{y^{\frac{3}{4} } }{y^{\frac{1}{2} } }$

This can be written as;

$y^{\frac{3}{4} } /y^{\frac{1}{2} }$

Apply law indices where you divide same base, subtract the powers

$y^{\frac{3}{4} -\frac{1}{2} } \\\\\\y^{\frac{1}{2} } \\\\\\\sqrt{y}$

Learn More

Indices: brainly.com/question/12685658

Keyword : rational exponents,radical expressions,integer

#learnwithbrainly

3 0

3 years ago