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3 years ago

If you draw one card from a standard deck, what is the probability that you draw a king or queen?

Mathematics

2 answers:

ivolga24 [154]3 years ago

6 0

Answer:

The answer is B

Step-by-step explanation:

The answer is B because To find the probability we use the mutually exclusive probability formula P(A) + P(B). The probability of picking a king is [1/13]] and the probability of picking a queen is

1 /13.

The sum is 2 /13

Scorpion4ik [409]3 years ago

4 0

A because there isn't a lot of cards in the deck

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A) 1.5 percent.
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3 years ago

Triangle J K L is shown. Angle J K L is a right angle. An altitude is drawn from point K to point M on side L J to form a right

KiRa [710]

Answer:

$3\sqrt{5}\ units$

Step-by-step explanation:

Theorem 1: The height of right triangle drawn from the right angle to the hypotenuse divides the hypotenuse into two segments. The length of the altitude is the geometric mean of these two segments. Hence,

$KM^2=ML\cdot MJ\\ \\6^2=ML\cdot 3\\ \\3ML=36\\ \\ML=12\ units$

Theorem 2: In a right triangle, the altitude drawn from the right angle to the hypotenuse divides the hypotenuse into two segments. The length of each leg of the right triangle is the geometric mean of the lengths of the hypotenuse and the segment of the hypotenuse that is adjacent to the leg.

Thus,

$KJ^2=MJ\cdot ML\\ \\KJ^2=3\cdot (3+12)\\ \\KJ^2=3\cdot 15\\ \\KJ^2=45\\ \\KJ=\sqrt{45}=3\sqrt{5}\ units$

5 0

3 years ago

What is the y value in the solution to this system of linear equations?

Travka [436]

Answer:

The y-value is -20

Step-by-step explanation:

So let's solve this by Elimination method;

-2(4x + 5y = -12)

4(2x + 3y = -16)

Let's Distribute;

-8x - 10y = 24

8x + 12y = -64

So x cancels out because -8 + 8 = 0

-10y + 12y = 2y

24 - 64 = -40

2y = -40

Divide both sides by 2;

y = -20

Now lets plug in y to find the value of x;

4x + 5(-20) = -12

4x - 100 = -12

Add 100 to both sides;

4x = 88

Divide both sides by 4;

x = 22

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3 years ago

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Komok [63]

Answer: 565.48

Step-by-step explanation:

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4 years ago

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Answer:

Step-by-step explanation:

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3 years ago