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andreyandreev [35.5K]
3 years ago
9

What is cos P?  Right triangle PQR with a short leg measuring 5, a long leg measuring 12, and the hypotenuse as 13

Mathematics
1 answer:
OLga [1]3 years ago
3 0
It depends how you name the sides of triangle.
Look at picture at the result.

cos\alpha=\frac{12}{13}\\
cos\beta=\frac{5}{13}

PS. Sorry for my terrible drawing but I did it as fast as possible :)

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What is the quotient of 9−x^2 divided by 3x and x^2+6x+9 divided by 3x?
Naddik [55]

Answer:

44 rem

Step-by-step explanation:

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5 0
2 years ago
The proportion of households in a region that do some or all of their banking on the Internet is 0.31. In a random sample of 100
Alenkasestr [34]

Answer:

Approximate probability that the number of households that use the Internet for banking in a sample of 1000 is less than or equal to 130 is less than 0.0005% .

Step-by-step explanation:

We are given that let X be the number that do some or all of their banking on the Internet.

Also; Mean, \mu = 310/1000 or 0.31   and  Standard deviation, \sigma = 14.63/1000 = 0.01463 .

We know that Z = \frac{X-\mu}{\sigma} ~ N(0,1)

Probability that the number of households that use the Internet for banking in a sample of 1000 is less than or equal to 130 is given by P(X <= 130/1000);

 P(X <=0.13) = P( \frac{X-\mu}{\sigma}  <= \frac{0.13-0.31}{0.01463} ) = P(Z <= -12.303) = P(Z > 12.303)

Since this value is not represented in the z table as the value is very high and z table is limited to x = 4.4172.

So, after seeing the table we can say that this probability is approximately less than 0.0005% .

4 0
3 years ago
A week before the election, 1,500 people were asked who they planned to vote for. 45% said they planned to vote for Candidate X.
Nastasia [14]
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3 0
3 years ago
Find the 60th term of the arithmetic sequence 4,-1,-6-
kobusy [5.1K]

Answer:

-291

Step-by-step explanation:

The common difference is -5

So the 60th term of the arithmetic sequence is

4+(60-1)×-5

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8 0
3 years ago
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mestny [16]

Answer:

I second that,

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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