Answer:
29.2%
Step-by-step explanation:
The fraction of students with black hair is 7/24. To convert that to a percentage, multiply by 100%.
7/24×100% = 29.1666(repeating)% ≈ 29.2%
Answer: Mean = 760
Standard deviation = 6.16
Step-by-step explanation:
Given : The number of trials: 
The probability that a certain protection system will be recovered :
We know that the mean and standard deviation of binomial distribution is given by :_
, where n is the number of trials and p is the probability of success.
Now, the mean and standard deviation of the number of cars recovered after being stolen is given by :-
Hence, the mean is 760 and standard deviation is 6.16 .
Answer: 254.35ins
Step-by-step explanation:
Circumference of a circle = 2πr or πd.
Given the area of the circle = 56.52ins. To find the area of the circle, we first need to find the radius of the circle first by making r the subject of the formula.
2πr = 56. 52
r = 56.52
----------
2π
where π = 3.14
Now put this in r above and solve
r = 56.52/2 x 3.14
= 56.52/6.28
= 9ins.
Now to find the area of the circle substitute for r in the equation of the area of the circle below
Area of circle = πr²
= 3.14 x 9²
= 3.14 x 81
= 254.35ins
Answer:
1B , 2B , 3 Output = 2*input + 1
Step-by-step explanation:
1. given (3n + 5) * 2
first do the operation between brackets.
n=5 so (3*5) =15 which gives (15 + 5)=20
now finish with the operation after the brackets, which is multiply by 2. 20*2 = 40, which is answer B.
2. 3x means 3*x which means in words: 3 times the number, which is answer A.
3. From the tabe you can see that if you just multiply the input by 2, you are almost at the output. If you add 1 then it is perfect..So you get Output = 2*input + 1
