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asambeis [7]
3 years ago
14

One card is selected from a deck of cards. Find the probability of selecting a black card or a jack.

Mathematics
1 answer:
SpyIntel [72]3 years ago
4 0

Answer:

black cards 26 or a jack 4

Step-by-step explanation:

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A female executive selecting her wardrobe purchased three blazers, two blouses, and five skirts in coordinating colors. how many
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She  can make a total of 30 different outfits, just multiply them all together.
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3 years ago
The equation represents a hyperbola centered at the origin with a directrix of . what is the value of b? 10 16 20 26
Rom4ik [11]

the value of b is = 10.

The equation of a hyperbola is x^2/24^2 - y^2/ (10)^2= 1.

<h3>What is hyperbola?</h3>

The geometric characteristics of a hyperbola or the equations for which it is the solution set characterize it as a particular kind of smooth curve that lies in a plane. Mirror reflections of each other that resemble two infinite bows make up a hyperbola's two connected components or branches.

<h3>What is the general formula for hyperbola?</h3>

The general formula for hyperbola = (x - h)²/a²- (y - k)²/(b)² = 1

<h3>According to the given information:</h3>

x²/24 - y²/(b)² = 1

(x - 0)²/24 - (y -0)²/(b)² = 1

a=24,h=0 and k=0

Now equation of the directrix

x=a²/c...(1)

and we know x=576/26...(2)

Therefore from 1 and 2 we get

24²/c=576/26.

isolate the c so we get,

C=26

C= center of focii

c = √(a² + b³)

c² = a² + b²

b = c² - a²

b = 10

So we get the value of b is 10.

Therefore the equation of a hyperbola is x²/24² - y²/ (10)² =  1.

To know more about Hyperbola visit:

brainly.com/question/12919612

#SPJ4

8 0
2 years ago
Translate this sentence into an equation. 128 is the product of Donnie's age and 8 . Use the variable d to represent Donnie's ag
Alina [70]
128 = 8d, because the product calls for multiplication to be performed.
8 0
4 years ago
Read 2 more answers
Please help NO LINKS
inn [45]

Answer:

(5,-6)

Step-by-step explanation:

This is where the two lines meet. I hope this helps ◕ ◡ ◕

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3 years ago
Read 2 more answers
Find the perimeter of ABC​
telo118 [61]
It’s 25 because perimeter means count all sides
7 0
3 years ago
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