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2 years ago

A parallelogram in a circumscribed circle must be a

Mathematics

1 answer:

Aleonysh [2.5K]2 years ago

6 0

Hi!

//gm circumscribed by a circle must be a cyclic quadrilateral.

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I need Serious help here!

marishachu [46]

Answer:

Step-by-step explanation:

0.5

7 0

1 year ago

Read 2 more answers

(Im sure this is a easy answer but im just double checking)

IgorC [24]

This answer seems to be C

5 0

2 years ago

For a group of 100 people, compute(a) the expected number of days of the year that are birthdays of exactly 3 people.(b) the exp

Scilla [17]

Answer:

Step-by-step explanation:

Leaving leap years, a year contains 365 days.

For a group of 100 people, each person is independent of the other and probability of any day being his birthday has a chance of

$\frac{1}{365}$

a) Probability that exactly 3 people have same birthday = $\frac{1}{365^3}$

Each day is independent of the other

And hence no of days having exactly 3 persons birthday out of 100 persons is binomial with n = 365 and p = $\frac{1}{365^3}$

Expected value of days = np = $\frac{1}{365^2}$

b) Distinct birthdays is binomail with p =1/365 and n = 365

Hence

expected value = np =1

4 0

3 years ago

Which matrix represents the system of equations shown below?<br> x = 10<br> 3x-9y = 7

OlgaM077 [116]

Y=4.1 because it if take ten. And multiply it by three then take negative 9Y equals seven and divided by nine gives you 4.1

3 0

2 years ago

The time to failure (in hours) of fans in a personal computer can be modeled by an exponential distribution with l=0.0003

Dvinal [7]

Answer: 0.0497870 ; 0.87754

Step-by-step explanation:

Given that :

λ = 0.0003

Defining a continuous distribution function :

F(x) = 1 - e^-λx = 1 - e^-0.0003x ; x ≥ 0

a. What proportion of the fans will last at least 10,000 hours?

P(x ≥ 10000) = e^-0.0003(10000) = 0.0497870

b. What proportion of the fans will last at most 7000 hours?

P(x ≥ 7000) = 1 - p(x ≤ 7000) = 1 - e^-0.0003(7000)

1 - 0.12245642825 = 0.87754

3 0

2 years ago