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
Gnesinka [82]
3 years ago
15

A child types the letters q, w, e, r, t, y, randomly producing 1000 letters in all. what is the expected number of times that th

e sequence qqqq appears, counting overlaps
Mathematics
1 answer:
notka56 [123]3 years ago
7 0
1/6*1/6*1/6*1/6 = 1/1296 = 0.078% probability of ANY 4-letter sequence (including qqqq)
1000/1296 is less than 1.
Expected number of times qqqq (or any given 4-letter sequence) will appear in 1000 letters is 0.
You might be interested in
What is -12(x-12)=-9(1+7x)​
katen-ka-za [31]

Answer:

-3

Step-by-step explanation:

-12(x-12)=-9(1+7x)

-12x+144=-9-63x

-12x+63x=-9-144

51x=-153

x=-153/51=-3

3 0
3 years ago
20 POINTS! WILL MAKE BRAINLIEST
SVETLANKA909090 [29]
1.a sphere with a radius of three units

 
By definition, the volume of a sphere is:
 V = ( \frac{4}{3} ) (\pi) (r ^ 3)

 Substituting values we have:
 V=(\frac{4}{3})(\pi)(3^3)
 Rewriting we have:
 V = (4) (\pi) (3 ^ 2)

V = (4) (\pi) (9)

V = 36\pi

 2.a cone with a diameter of twelve units and a height of three units
 
 By definition, the volume of a cone is given by:
 V =  \frac{1}{3}  (\pi) (r ^ 2) (h)

 Substituting values we have:
 V =  \frac{1}{3} (\pi) ((\frac{12}{2}) ^ 2) (3)

 Rewriting we have:
 V = (\pi) (6 ^ 2)

V = 36\pi
6 0
3 years ago
Write 2 fraction problem with any operation!!plz help!!!!!write them down and solve them!!!!
Deffense [45]
John wanted to go on a train. the equation y=9/5 x describes the number of miles y that a train travels in x minutes. what is the constant speed of the train in terms of hours?

The constant speed of the train is 108 miles per hour



4 0
4 years ago
If the difference of two numbers is 43 and the sum of the numbers is 13, what<br> are the numbers?
meriva

Answer:

Numbers are 28 and -15

Step-by-step explanation:

Mark first number X, and second number Y, then:

x-y=43

and

x+y=13

We get system of two equations. Solve it by add both them together:

x-y+x+y=43+13

2x=56

x=28 we get first number

x+y=13

28+y=13

y=13-28

y=-15

4 0
4 years ago
What is the domain
xenn [34]
<h3>Answer: Give the domain and the range of each quadratic function whose graph is described. The vertex is (−1,−2)(−1,−2) and the parabola opens up.</h3>

8 0
2 years ago
Read 2 more answers
Other questions:
  • Which expression is equivalent to (7×-5) - (3x-2)​
    12·1 answer
  • Help please with this
    13·1 answer
  • An item is regularly priced at $51. Amanda bought it on sale for 85% off the regular price. How much did Amanda pay?
    9·1 answer
  • If g(x) = <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7Bx-7%7D%20" id="TexFormula1" title=" \sqrt{x-7} " alt=" \sqrt{x-7} " ali
    6·1 answer
  • This number represents the equal number of parts that equal a whole fraction
    15·1 answer
  • The Kamp family has twins, Rob and Rachel. Both Rob and Rachel graduated from college 2 years ago, and each is now earning $50,0
    9·1 answer
  • 1. Jason had 144 pencils shoved in his locker. He decided to share them with 11 other kids
    6·1 answer
  • Which expression is the simplest form of -(3x+y)+2x-4y)?
    10·1 answer
  • If a lesson lasted 35 minutes how much teaching would he do?
    5·1 answer
  • La mitad de un número más tres cuartos del número es 3 menos que cuatro tercios del número. Encuentre el número.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!