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
LUCKY_DIMON [66]
3 years ago
12

In the game of roulette a metal ball is dropped into a spinning wheel having 38 compartments, 18 of which are red, 18 are black,

two are green. suppose we spin the wheel ten consecutive times and let a random variable x be the number of times the metal ball will land on a red color.
Suppose you always bet $5 on red. If red shows up you win $5 otherwise you lose your bet. What is the probability of
A. Making a $30 profit if you bet on ten consecutive spins of the wheel?
B. Breaking even if you bet on 10 consecutive spins
C. Being $5 in deficit if you bet on 10 consecutive spins
Mathematics
1 answer:
leonid [27]3 years ago
8 0
I think its A but i dont sure sorry
You might be interested in
Mary has a third of the money that Erin has. Erin has $8 less than John. Together they have $267. How much money does each of th
svet-max [94.6K]

Mary = (1/3)x

Erin = x - 8

John = x

Here is your equation:

(1/3)x + (x - 8) + x = 267

Take it from here.

5 0
3 years ago
Read 2 more answers
The width of a rectangle is 80 feet. The length of the rectangle is longer than the width by a distance of feet. Write an algebr
Sauron [17]
Length=width+x
l=w+x (x being the amount of feet longer than the width)
5 0
3 years ago
Read 2 more answers
The Length of a rectangle exceeds its breadth by 9 cm. if length and breadth are each increased by 3 cm, the area of new rectang
gizmo_the_mogwai [7]

Answer:

Breadth = 8 cm

Length = 17 cm

Step-by-step explanation:

Given rectangle:

Breadth = x cm

Length = x + 9 cm

Area = length * breadth

        = x * (x + 9)

       = x² + 9x

Rectangle with length and breadth increased:

Breadth = x + 3 cm

Length = x + 9 + 3 = x + 12 cm

Area = 84 + (x² + 9x) cm²

(x +3) * (x +12) = 84 + x² +  9x

Use FOIL method

x*x  + x*12 + 3*x + 3*12 = 84 + x² + 9x

      x² + 12x + 3x + 36  = 84 + x² + 9x  {add the like terms}

             x² + 15x  + 36  = 84 + x² + 9x

x² + 15x + 36 - 84 - x² - 9x = 0

      6x - 48 = 0

             6x = 48

             x = 48/6

        x = 8

Breadth = x = 8 cm

Length = x + 9 = 8 +9 = 17 cm

7 0
4 years ago
A recipe that will make 3 pies calls for 7 cups of flour. Find how many pies can be made with 28 cups of flour.
pashok25 [27]

Answer:

My answer was wrong sorry

6 0
3 years ago
certain computer virus can damage any file with probability 35%, independently of other files. Suppose this virus enters a folde
Ksivusya [100]

Answer:

0.623 is the probability that between 800 and 850 files get damaged.

Step-by-step explanation:

We are given the following information:

We treat virus can damage computer as a success.

P( virus can damage computer) = 35% = 0.35

The conditions for normal distribution are satisfied.

By normal approximation:

\mu = np = 2400(0.35) = 840\\\sigma = \sqrt{np(1-p)} = \sqrt{2400(0.35)(1-0.35)} = $$23.36

We have to evaluate probability that between 800 and 850 files get damaged.

P(800 \leq x \leq 850) = P(\displaystyle\frac{800 - 840}{23.36} \leq z \leq \displaystyle\frac{850-840}{23.36}) = P(-1.712 \leq z \leq 0)\\\\= P(z \leq 0.428) - P(z < -1.712)\\= 0.666 - 0.043 = 0.623 = 62.3\%

P(800 \leq x \leq 850) = 62.3\%

0.623 is the probability that between 800 and 850 files get damaged.

8 0
3 years ago
Other questions:
  • It takes Lily 45 mintues to bathe and groom a dog. How many dogs can she groom in an 9 hour day?
    11·1 answer
  • Describe the steps you would use to solve the equation 4x + 7 = 15
    6·2 answers
  • A rectangular painting by Leonardo da Vinci measured 62cm along its diagonal. If the painting has a height of 42 cm how wide is
    11·1 answer
  • Evaluate 8 1/2÷ 8 1/2<br>​
    5·1 answer
  • Simplify <br> square roots.
    13·1 answer
  • A fish tank holds 90 gallons of water is 40% full. How many more gallons are needed to fill the tank?
    7·2 answers
  • Find the difference.<br><br> $9.30<br> - 4.12<br><br> A) $4.22<br><br> B) $4.42<br><br> C) $5.18
    10·2 answers
  • Explain it how a 9th grader would​
    8·1 answer
  • What is the remainder when 3x2−7x+5 is divided by x+5?
    13·1 answer
  • Which first step for solving the given system using substitution results in an equation without fractions?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!