Answer: x=17
Step-by-step explanation:
4x - 64 + x = 21
4x+x=64+21
5x=85
x= <u>85</u>
5
x=17
Since each month profit is $1,900, it should be multiplied by 1900 as the time goes by. For example, one month profit is 1900, two month profits are 2*1900, three months profits are 3*1900, and so on...
So, it's Y (the amount of profits after X months) = 1900*X
Answer: Our required probability is 0.99338.
Step-by-step explanation:
Since we have given that
n = 100
p = 0.200
So,
So, we can apply normal approximation.
Mean = 20
Standard deviation =
Since
So, Probability that fewer than 30 but a packet after testing a free sample is given by
Hence, our required probability is 0.99338.