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mote1985 [20]
3 years ago
14

Need help with this problem:

Mathematics
1 answer:
arlik [135]3 years ago
7 0

Answer:

843 days

Step-by-step explanation:

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List all the ways to select two members from S with repetition. The order in which the members are selected is not important. Fo
Taya2010 [7]

9514 1404 393

Answer:

  KK KL KM KN KP LL LM LN LP MM MN MP NN NP PP

Step-by-step explanation:

Instead of starting with adjacent letters in the list, we start with the same letter. There are 15 possible pairs.

  KK KL KM KN KP LL LM LN LP MM MN MP NN NP PP

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<em>Additional comment</em>

We leave out pairs with letters previous, because you've said KL is the same as LK, and KL has already been listed. The problem with this list is that it misstates the probabilities of randomly obtaining a given pair. It is not 1/15, but is 2/25 for all but letter duplicates. For duplicates (KK), the probability is 1/25, not 1/15.

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3 years ago
Sally needs to have some drywall and insulation work done in her house. She has received a quote from a professional drywall con
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It said the correct answer was the contractor 
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True or False: The relation
Andrews [41]

It would be false. :)                                                

3 0
3 years ago
EXPERT HELP, I'LL GIVE BRAINLIEST:
DanielleElmas [232]

Answer:

B or A.

Step-by-step explanation:

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3 years ago
Show that sec(x)-tan(x)sin(x)=cos(x)is an identity for any value of x.
Dmitriy789 [7]

Here is one way to show that the left side is identical to the right side.

\sec(x)-\tan(x)\sin(x) = \cos(x)\\\\\\\frac{1}{\cos(x)}-\frac{\sin(x)}{\cos(x)}\sin(x) = \cos(x)\\\\\\\frac{1}{\cos(x)}-\frac{\sin^2(x)}{\cos(x)} = \cos(x)\\\\\\\frac{1-\sin^2(x)}{\cos(x)} = \cos(x)\\\\\\\frac{\cos^2(x)}{\cos(x)} = \cos(x)\\\\\\\cos(x)=\cos(x)\\\\\\

Throughout the entire process, the right hand side stayed the same. When working on identities, it's important to keep one side the same while you transform the other side.

Despite the two sides being identical when simplified, there is the issue of cos(x) being zero in the denominator on the left hand side. Be sure to account for this when forming the domain. No such issue occurs on the right hand side. For instance, the value x = pi/2 leads to a division by zero error when in radian mode. So if I was your teacher, I would revise the "for any value of x" and replace it with something along the lines of "for any x value in the domain".

3 0
3 years ago
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