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3 years ago

Patricia was having fun playing a card game. To win the game, she

Mathematics

1 answer:

Mariana [72]3 years ago

5 0

Answer:

Step-by-step explanation:

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Seema runs 5 miles more per week than her sister Padma. If Seema runs 17 miles per week, which equation could be used to find th

sashaice [31]

Answer:

Step-by-step explanation:

because 17-5=12 so the answer is 12

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3 years ago

What would y equal for this isosceles triangle

dsp73

Answer:

y would be equal to 27

step by step explanation:

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3 years ago

Read 2 more answers

What’s the value of x?

ale4655 [162]

Answer:

x=12

Step-by-step explanation:

What we have here is a secant and tangent. Using this theorem,

Given the segments of a secant segment and a tangent segment which share an endpoint outside of a circle,

The product lengths of the secant segment and external secant segment equals the length of the tangent segment squared.

In other words,

$9(7 + 9) = {x}^{2}$

$9(16) = {x}^{2}$

$144 = {x}^{2}$

$x = 12$

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3 years ago

Round the nearest hundredth. 53.789

hammer [34]

Answer: 53.79

Step-by-step explanation:

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3 years ago

A man has n keys on a key ring, one of which opens the door to his apartment. Having celebrated a bit too much one evening, he r

schepotkina [342]

Answer:

The value is $P(3) = \frac{1}{n}$

Step-by-step explanation:

From the question we are told that

The number of keys is n

The number of keys remaining after the first key is chosen is n-1

The probability that he gains entrance with the first key he selects is $\frac{1}{n}$

Generally the probability that the first key does not open the door is

$p(F_1) = 1 - \frac{1}{n} = \frac{n-1}{n}$

Generally the number of keys remaining after the second key is chosen is

n-2

Generally the probability that he gains entrance with the second key he selects is

$\frac{1}{n-1}$

Generally the probability that the second key does not opens the door is

$P(F_2) = 1- \frac{1}{n-1} = \frac{n-2}{n-1}$

Generally the probability that he gains entrance with the third key he selects is

$\frac{1}{n-2}$

Generally the probability that the door opens with the third key

$P(3) = p(F_1) * P(F_2) * \frac{1}{n-2}$

=> $P(3) = \frac{n-1}{n} * \frac{n-2}{n-1} * \frac{n-2}{n-1}$

=> $P(3) = \frac{1}{n}$

Note :

All the outcome of the events are independent

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4 years ago