Ask question

Ask question

All categories

kakasveta [241]

3 years ago

8

In triangle OPQ, the measure of angle Q= 90 degrees, PO= 97 degrees, OQ= 65 and QP = 72 degrees. What ratio represents the cosin

e of angle O

1 answer:

Arturiano [62]3 years ago

6 0

Answer:

92 degrees

Step-by-step explanation:

well just dived first part then multiply second

You might be interested in

Find the probability of at least 6 failures in 7 trials of a binomial experiment in which the probability of success in any one

oksano4ka [1.4K]

Answer:

$P(x \geq 6)=P(X=6)+P(X=7)$

And we can find the individual probabilities:

$P(X=6)=(7C6)(0.91)^6 (1-0.91)^{7-6}=0.358$

$P(X=7)=(7C7)(0.91)^7 (1-0.91)^{7-7}=0.517$

And replacing we got:

$P(x \geq 6)=P(X=6)+P(X=7)= 0.358+0.517=0.875$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=7, p=1-0.09=0.91)$

The probability associated to a failure would be p =1-0.09 = 0.91

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

And we want to find this probability:

$P(x \geq 6)=P(X=6)+P(X=7)$

And we can find the individual probabilities:

$P(X=6)=(7C6)(0.91)^6 (1-0.91)^{7-6}=0.358$

$P(X=7)=(7C7)(0.91)^7 (1-0.91)^{7-7}=0.517$

And replacing we got:

$P(x \geq 6)=P(X=6)+P(X=7)= 0.358+0.517=0.875$

6 0

3 years ago

There are 3 quarters, 4 dimes and 7 nickels in a change purse. Suppose 3 coins are selected without replacement. What is the pro

qwelly [4]

Prob of just quarter is 3/14 for a dime is 4/14 and for a nickel its 7/14
then all you do is multiply them all together to get 306122449/<span>10000000000 that took me way to long</span>

6 0

3 years ago

Read 2 more answers

Suppose that y varies directly with x, and y=24 when x=15.

soldier1979 [14.2K]

Answer:

A

x=0.625y

y=1.6x

B

y=3.2

Step-by-step explanation:

8 0

3 years ago

The Grand Canyon is approximately 29 kilometers long. Mariner Valley is a canyon on Mars that is approximately 212 kilometers lo

lesantik [10]

I’m not sure if I’m correct but I think it is 2^21

8 0

3 years ago

Will mark Brainliest if answered the question correctly! <3

aalyn [17]

Answer:

1) 504 miles 2) 4,200 miles

Step-by-step explanation:

8 0

3 years ago