1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
skelet666 [1.2K]
3 years ago
14

P1=1*1! P2= 1*1! + 2*2! P3=1*1! + 3*3! Make a general rule for Pn.

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
7 0

Answer:

I don't even know if what you typed is a actual question or not so I'm just gone guess it's....A or B?

Step-by-step explanation:

You might be interested in
A bag contains tiles with the letters p -r-o-b-a-b-i-l-i-t-y Tyler chooses a tile without looking and doesn't replace it he choo
ipn [44]

Answer:

\frac{1}{55}

Step-by-step explanation:

Total number of tiles: 11 (obtained from counting the letters in probability)

Probability of picking the letter "i" the first time:

There are 2 letter "i's", and 11 total options, so the probability of picking an "i" is:

\frac{2}{11}

Probability of picking the letter "i" the second time:

We now have one less letter in the bag, as the first letter "i" was not replaced.

This means we now only have 1 letter "i", and 10 total options, so the probability of picking the last "i" is:

\frac{1}{10}

When you have two probabilities that are dependant on each other, you multiply them to get the probability of one, given that the other has happened.

Total probability:

\frac{2}{11}*\frac{1}{10} = \frac{2}{110}

Simplify by dividing by 2:

\frac{1}{55}

7 0
3 years ago
Read 2 more answers
CAN SOMEONE PLEASE WRITE AN EQUATION TO THIS! I WOULD VERY MUCH APPRECIATE IT!
Tresset [83]
Y=-1/3x-4
is that what you meant? as in y=mx+b form?
7 0
3 years ago
Help me with this please!!
soldier1979 [14.2K]
Its the first one. A
7 0
3 years ago
A breeder reactor converts uranium-238 into an isotope of plutonium-239 at a rate proportional to the amount of uranium-238 pres
topjm [15]

Let U(t) denote the amount of uranium-238 in the reactor at time t. As conversion to plutonium-239 occurs, the amount of uranium will decrease, so the conversion rate is negative. Because the rate is proportional to the current amount of uranium, we have

\dfrac{\mathrm dU}{\mathrm dt}=-kU

where k>0 is constant. Separating variables and integrating both sides gives

\dfrac{\mathrm dU}U=-k\,\mathrm dt\implies\ln|U|=-kt+C\implies U=Ce^{-kt}

Suppose we start some amount u. This means that at time t=0 we have U(0)=u, so that

u=Ce^{-0k}\implies C=u\implies U=ue^{-kt}

We're given that after 10 years, 99.97% of the original amount of uranium remains. This means (if t is taken to be in years) for some starting amount u,

0.9997u=ue^{-10k}\implies k=-\dfrac{\ln(0.9997)}{10}

The half-life is the time t_{1/2} it takes for the starting amount u to decay to half, 0.5u:

0.5u=ue^{-kt_{1/2}}\implies t_{1/2}=-\dfrac{\ln(0.5)}k=\dfrac{10\ln2}{\ln(0.9997)}

or about 23,101 years. Notice that it doesn't matter what the actual starting amount is, the half-life is independent of that.

7 0
3 years ago
Sara is going to wrap a birthday present for her niece. She has a single piece of wrapping paper with an area of 400 in2.
avanturin [10]

Answer:

There are plenty of unique ways to wrap presents beautifully. The quickest way that doesn't even require a box: Create a gift bag out of another ..

Step-by-step explanation:

There's something about a pile of presents under the tree that catches the eye—no matter how they're wrapped. But when your gifts look like something straight out of a storybook, it instantly adds to the Christmas magic.

We know what you're thinking, though: Who has time for that between decorating the house, shopping for your loved ones, prepping for the Christmas party, and planning your holiday meal? What if we told you that creating presents that look professionally wrapped is actually fairly simple?

There are plenty of unique ways to wrap presents beautifully. The quickest way that doesn't even require a box: Create a gift bag out of another household staple, like an old (but clean) pillowcase or a brown paper bag. You'd be surprised what a simple stamp, paint pen, or stylish ribbon can do to breathe new life into these objects. But if you have a little more time to get creative, why not raid your craft closet and make something truly special and Pinterest-worthy, like lace-covered packages or custom paper created by your kids?

No matter which direction you go and no matter what holiday you're celebrating—Christmas, a kids' birthday, or a life event like a wedding or a baby shower—you'll find plenty of inspiration, plus step-by-step gift wrapping instructions, here. When you're done, we're certain that present is going to be so pretty, it'll almost be too hard to open

4 0
2 years ago
Other questions:
  • Which expression gives the measure of RST in the diagram below?
    9·2 answers
  • What is the measure of angle AED A)46 B)134 C)136 D)146
    6·1 answer
  • Help! Due tomorrow
    7·1 answer
  • I need the answer real quick will someone help me
    9·1 answer
  • What type of equation is x^2 - 2x - 15 = 0 ? And how do you solve it? Please be as descriptive as you can! :)
    11·1 answer
  • What is 956,827 rounded to the nearest thousands
    6·1 answer
  • Clinical Trial When XELJANZ (tofacitinib) was administered as part of a clinical trial for this rheumatoid arthritis treatment,
    7·1 answer
  • If f(x) = 1/9x-2, what is f-1 (x)?
    11·1 answer
  • The second term of arithematic proggresions 7. and the sum of the first four termd is 12 find
    9·1 answer
  • Fill in the table using this function rule.<br> y=30-4x<br> X<br> y<br> 1<br> 3<br> 5<br> 6<br> a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!