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kap26 [50]
2 years ago
5

Please help.... this is confusing me:0

Mathematics
1 answer:
JulsSmile [24]2 years ago
5 0

Answer:

See below

Step-by-step explanation:

IN a right triangle , remember  S-O-H-C-A-H-T-O-A   <===memorize this!

sin z = O/H = opposite side/hypotenuse = 16/20

cos z = A/H = adjacent / hy[potenuse = 12/20

tan z  = O/A = 16/12

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A k out of n system is one in which there is a group of ncomponents, and the system will function if at least kof the components
iVinArrow [24]

Answer:

0.99145 is the probability that the system will work properly.

Step-by-step explanation:

We are given the following information:

The components function independently of one another.

We treat component working properly as a success.

P(component working properly) = 0.9

Then the number of components follows a binomial distribution, where

P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 5 and x = 3

For the system to function if atleast 3 out of 5 will work properly.

We have to evaluate:

P(x \geq 3) = 1 - P(x = 1) - P(x = 2) \\=1- \binom{5}{1}(0.9)^1(1-0.9)^4 - \binom{5}{2}(0.9)^2(1-0.9)^3\\=1-0.00045-0.0081\\= 0.99145

0.99145 is the probability that the system will work properly.

6 0
3 years ago
Help me please
boyakko [2]

Answer:

8 is the answer

Step-by-step explanation:

If you must cut all loaves the same, it is the smallest number that gives at least 50 slices.

4 0
3 years ago
PLEASE HELP! 20 POINTS!! PIC ATTACHED :)
leonid [27]

From the figure, we immediately have

cos(θ) = 8/17

sin(θ) = 15/17

By definition of tangent,

tan(2θ) = sin(2θ)/cos(2θ)

Recall the double angle identities:

sin(2θ) = 2 sin(θ) cos(θ)

cos(2θ) = cos²(θ) - sin²(θ) = 2 cos²(θ) - 1

Then

tan(2θ) = (2 sin(θ) cos(θ)) / (2 cos²(θ) - 1)

tan(2θ) = (2 × 15/17 × 8/17) / (2 × (8/17)² - 1)

tan(2θ) = -240/161

6 0
2 years ago
Consider f(x)=7x^2+8/x−6. Complete the following statements.
kirill [66]

Answer:

A

Step-by-step explanation:

Iwis

7 0
3 years ago
There are______<br>Pairs of integers satisfying a÷b = -2​
aleksandr82 [10.1K]

Answer:

There are only 1  

Pairs of integers satisfying a÷b = -2​

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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