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
ratelena [41]
3 years ago
8

Consider a dart board made of three concentric circles of radii 1 cm, 2cm and 3 cm, respectively. The points you obtain by hitti

ng different regions of the board are as follows: • 50 points if the dart lands anywhere within the circle of radius 1 cm. • 30 points if the dart lands within the circle of radius 2 cm but outside the circle of radius 1 cm. • 20 points if the dart lands outside the circle of radius 2 cm but within the circle of radius 3 cm. Suppose that in 10 independent attempts, you have never hit the outermost ring (i.e, where you score 20). Every dart hits the board somewhere. In that case, what is your expected score, given that you never miss the board? Pick ONE option 0400 Clear Selection
Mathematics
2 answers:
Vlada [557]3 years ago
8 0

Answer:

The answer is 350 points

Step-by-step explanation:

The Area of a circle is πr∧2

The problem states that in the attempts, you never hit the outermost ring in the 10 attempts so we need the area of the 1cm and 2cm circles

Area of the 1st circle;  π X 1∧2 = π

Area of the Second circle; π X 2∧2 = 4π

We also need the area which is the difference between the area of the 1cm and 2cm circle

4π - π  = π

Points 50 = π/4π = 1/4

points 30 = 3π/4π = 3/4

For one attempt,

E(x) = 50 x 1/4 + 30 x 3/4

= 12.25 + 22.5

= 34.75

This is approximately 35

Therefor, 10 individual attempts will be 10 x 35 = 350

TEA [102]3 years ago
6 0
The answer to this is 350
You might be interested in
ASAP ASAP HELP MARK AS BRAINLIEST
Anna007 [38]

Alright, imma help you. Imma work on it on a piece of paper. :D

4 0
2 years ago
Read 2 more answers
Please help me its help.
IgorLugansk [536]

The answer will be 81.

Step-by-step explanation:

just multiple by 3

8 0
2 years ago
Read 2 more answers
Select the scenario that correctly represents the given graph.
Mashcka [7]

Answer:

C. The vertical distance of a roller coaster from the ground changes with respect to its horizontal distance from the beginning of the ride.

Step-by-step explanation:

See how the graph is in a "U" shape? That tells us that it first decreases and then goes back up at some point.

The way you would find this answer is to go through each scenario (A, B, C, and D) and think about which thing would make sense to go down and then up.

5 0
3 years ago
A house was bought for $50000 and was sold 15 years later for $95000. find the effective yield.
11Alexandr11 [23.1K]

Answer:

If we divide that by 15 years, we get an annual yield of

$3,000 per year.

Step-by-step explanation:

welcome :)

8 0
2 years ago
Suppose you have $245. If you decide to spend it all on ice cream, you can buy 70 pints. If the price of a glass of lemonade is
guajiro [1.7K]

Answer:

198

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • I need help graphing and answering this, please answer I really need help!
    5·1 answer
  • A map has a scale of 2 inches = 15 miles.If two towns are 7 inches apart on the map,how far apart are they actually
    14·2 answers
  • P/2 is less than or equal to negative 3
    8·2 answers
  • so bridget earns an hour. how much will she earn if she works 15 hours how much will she earn if she work 25 hours
    7·1 answer
  • Whats the Angle for A,B, and C? Ive been stuck on this problem for a while. It would be great if you helped
    13·1 answer
  • I need help on this question ASAP
    11·1 answer
  • A dance instructor earns $75 for teaching 3 classes. The instructor receives a 10percent raise Enter how much the instructor ear
    6·2 answers
  • Directions: Complete each equation so that it equals 1 gallon.
    12·2 answers
  • 3)
    10·1 answer
  • An object oscillates as it moves along the
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!