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3 years ago

????????????????????????????????????????????????????????????

Mathematics

1 answer:

Nuetrik [128]3 years ago

8 0

Answer:

r=20

Step-by-step explanation:

to get rid of the division part, you multiply 6 each side. now you have r+10=30. to solve, now you subtract 10 from both sides. this gives you r=20 :)

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The probability of winning on an arcade game is 0.568. If you play the arcade game 22 times, what is the probability of winning

Serggg [28]

The probability of winning 15 out of the 22 games is $P = 0.099$

<h3>what is the probability of winning more than 15 times?</h3>

We know that the probability of winning on the arcade game is 0.568.

Then the probability of losing is:

P = 1 - 0.568 = 0.432

The probability of winning 15 out of 22 games is given by the equation:

$P = C(22, 15)*(0.568)^{15}*(0.432)^{7}$

Where C(22, 15) is the number of combinations of 15 elements that we can make with a set of 22 elements, given by:

$C(22, 15) = \frac{22!}{(22 - 15)!*15!} = \frac{22!}{7!*15!} = \frac{22*21*20*19*18*17*16}{7*6*5*4*3*2*1} = 170,544$

Then the probability is:

$P = 170,544*(0.568)^{15}*(0.432)^7 = 0.099$

If you want to learn more about probability:

brainly.com/question/25870256

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2 years ago

Triangle BCD is similar to triangle ACE. If the triangles are isosceles, what is the length of AB?

zzz [600]

$\frac{2.75}{22} = \frac{5}{ac} \\ ac = 5 \div ( \frac{2.75}{22} ) = 40 \\ ab = 40 - 5 = 35$
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natta225 [31]

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Step-by-step explanation:

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