28 is 80% of what number....
28 = 0.80x
28/0.80 = x
35 = x.......so 28 is 80% of 35
Answer:
$28.35
Step-by-step explanation:
Answer:
The probability that computers work more than 41 minutes is 0.15866 or 15.87%.
Step-by-step explanation:
We are given that a computer tallied the time to work for 200 days and found it reasonable to the normal curve. The mean is 35 minutes, and the standard deviation with six minutes.
Let X = <u><em>the time taken by computer to work for 200 days</em></u>.
So, X ~ Normal()
The z-score probability distribution for the normal distribution is given by;
Z = ~ N(0,1)
where, = population mean time = 35 minutes
= standard deviation = 6 minutes
Now, the probability that computers work more than 41 minutes is given by = P(X > 41 minutes)
P(X > 41 minutes) = P( > ) = P(Z > 1) = 1 - P(Z 1)
= 1 - 0.84134 = <u>0.15866</u>
The above probability is calculated by looking at the value of x = 1 in the z table which has an area of 0.84134.
Answer:
https://quizlet.com/71025324/ch-6-simple-interest-flash-cards/
Step-by-step explanation:
that has all your questions
1) Quaterly interes = 3% / 4 = 0.03 / 4
2) Values:
after 1 quarter: 2000 (1 + 0.03/4)
after 2 quarters: 2000 (1 + 0.03/4)^2
after 3 quarters: 2000 (1 + 0.03/40^4
after 4 quarters = 2000 (1 + 0.03/4)^4
You could have used the future value formula directly:
A = C * (1 + r/n) ^ n*t
where r = 3% = 0.03
n = number of periods in a year: 4
t = number of years = 1
C = initial investment = 20000
=> A = 2000 (1 + 0.03/4)^4
Answer: option D. A = 2000 ( 1 + 0.03 /4) 4