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
Dominik [7]
2 years ago
12

Need help asap, thanks!!!ヾ(⌐■_■)ノ♪

Mathematics
1 answer:
Lelu [443]2 years ago
4 0

Step-by-step explanation:

the probability of making one shot is 75% or 0.75 or 3/4.

the probability to make 2 shots is then

3/4 × 3/4 = 9/16 = 0.5625

and so on.

the probability to miss 1 shot is then 25% or 0.25 or 1/4.

the probability to make at least 4 out of 5 shots is the sum of the probability to make all 5 shots plus the probability to make 4 shots.

or the probability to miss 0 plus the probability to miss 1 shot.

anyway, we can go with the positive approach. it seems to be the same complexity as the negative approach.

the probability to make all 5 shots is

(3/4)⁵ = 3⁵/4⁵ = 243 / 1024 = 0.237304688...

the probability to e.g make the first 4 shots and miss the 5th is

(3/4)⁴×1/4 = 3⁴/4⁵ = 81 / 1024 = 0.079101563...

how many possibilities do we have to make 4 out of 5 shots ?

there is no repetition, and the sequence inside the "picked" 4 does not matter, so we need combinations :

C(5,4) = 5! / (4! × (5-4)!) = 5

so, the probability to make exactly 4 out 5 shots is

81/1024 × 5 = 405/1024 = 0.395507813...

and the total probability to make at least 4 shots is

243/1024 + 405/1024 = 648/1024 = 81/128 = 0.6328125

to control,

this plus making exactly 3 plus exactly 2 plus exactly 1 plus none must be the probability 1 (as there is no other possible outcome).

making 3 :

(3/4)³×(1/4)² = 3³/4⁵ = 27/1024

C(5,3) = 5×2 = 10

270/1024

making 2 :

3²/4⁵ = 9/1024

C(5,2) = 5×2 = 10

90/1024

making 1 :

3/1024

C(5,1) = 5

15/1024

making 0 :

1/1024

in sum

(270+90+15+1)/1024 = 376/1024

plus the 648/1024 = 1024/1024 = 1

correct.

You might be interested in
Tim is 5 years older than Melissa. The sum of their ages is 21. This system is represented by the equations: t = 5 + m t + m = 2
Triss [41]
Tim is 13 and Melissa is 8
6 0
3 years ago
10 points and will be marked BRAINLIEST if the answer you give is correct!
kifflom [539]

Answer:

the one on the bottom and Lewis made one less of whatever Bryan made

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
What is the height of 840mm³.
Rus_ich [418]

Answer:

What?

Step-by-step explanation:

Possible answers could be

the factors of 840

IF the 840 is your area.

Factors of 840 which are your answers:

1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420.

7 0
2 years ago
If y varies directly with x and y = 2 when x = 10, then what is the value of y when x = 40? A. 8 B. 45 C. 200 D. 320
Leto [7]

Answer:

A

Step-by-step explanation:

given that y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

to find k use the given condition y = 2 when x = 10

k = \frac{y}{x} = \frac{2}{10} = \frac{1}{5}

y = \frac{1}{5} x ← equation of variation

when x = 40, then

y = \frac{1}{5} × 40 = 8 → A


3 0
3 years ago
Read 2 more answers
Cendrick D'Amitrano works Friday and Saturday delivering pizza. He delivers 8 pizzas on Friday. How many pizzas must he deliver
BabaBlast [244]

Answer:

14

Step-by-step explanation:

there are two days whose mean is 11.for you to get the mean of 11 you had divided by 2

multiply 11 by 2 which is 22

then minus fridays which is 8

4 0
2 years ago
Other questions:
  • Find the arc length intercepted by a central angle of radians in a circle whose radius is 18.4 inches. 13.8π 15.2π 24.5π
    6·2 answers
  • Fill in the other coordinate for the line 7x - 5y = 21: (4, )
    14·1 answer
  • 1.2.4 journal:Algebraic Properties and expressions
    11·1 answer
  • PLEASE HELP ME THIS IS MY FINAL !!!!
    14·1 answer
  • A drawing of a tree and a wall are in the image below.
    14·1 answer
  • Claire is decorating a card for her friend. She has a square piece of paper with an area of 36 square inches. She wants to put
    13·1 answer
  • 5x6x6x6x6x6xx6x6x6x6
    8·1 answer
  • Which diagram represents the factors of m2 – 10m + 16 ?
    14·2 answers
  • Add the following rational number =<br> 3/11 and -5/12
    8·1 answer
  • Given the system of linear equations:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!