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3 years ago

What is the probability of drawing a king and a 7 from a deck of cards without replacement?

Mathematics

1 answer:

Arte-miy333 [17]3 years ago

6 0

P of king is 4/ 52 = 1/13

P of 7 = 4/51

total prob = 4/ 663

hope it helepd

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Solve for v. M=bv/k Please help!!! I'm horrible at math.

Semenov [28]

First, I like switching the sides so that the equation looks like this: bv/k=M
Then get bv alone by multiplying both sides by k: bv=kM
After that, divide both sides by b to get v by itself: v=kM/b
I hope this helps you!

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3 years ago

The sum of two numbers is 52 . The larger number is 12 more than the smaller number. What are the numbers?

son4ous [18]

this is the answer 40 + 32

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3 years ago

Need help fast plz for my pre calc exam

bezimeni [28]

Answer:

h = 8.54 units

Step-by-step explanation:

The Law of Cosines

It relates the length of the sides of a triangle with one of its internal angles.

Let a,b, and c be the length of the sides of a given triangle, and x the included angle between sides a and b, then the following relation applies:

$c^2=a^2+b^2-2ab\cos x$

Since we know the values of all three side lengths, we solve the equation for x:

$\displaystyle \cos x=\frac{a^2+b^2-c^2}{2ab}$

For the triangle ABC in the image, a=10, b=15, c=13, thus:

$\displaystyle \cos A=\frac{10^2+15^2-13^2}{2*10*15}$

$\displaystyle \cos A=\frac{156}{300}$

$\displaystyle \cos A=0.52$

Thus, A = 58.67°

For the right triangle of height h and hypotenuse 10, we use the sine ratio:

$\displaystyle \sin 58.67^\circ=\frac{h}{10}$

Solving for h:

$h = 10\sin 58.67^\circ$

h = 8.54 units

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3 years ago

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Tom [10]

Your answer would be two

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3 years ago