A tad more than 29 years, but that depends on the number of times it is being compounded
Answer:
The mean point is 459
Step-by-step explanation:
We use the formula:
Evelyn's points per pinball game are normally distributed with a standard deviation of 18 points.
This means:
From the question, the standard deviation of 405 points is -3.
We substitute x=405, and z=-3 to get:
Multiply through by 18 to get:
Divide through by -1
Answer:
.
Step-by-step explanation:
Answer:
3/8
Step-by-step explanation:
After spending 3/8 of her money on a bag, she has 5/8 of the original amount of money left. As she gave 2/5 of the remaining amount of money to her sister, she gave 1/4 of the original amount of money to her sister (5/8 × 2/5 = 1/4). Therefore, there's only 3/8 (1 - 3/8 - 1/4 = 3/8) of the original amount of money left in her bag.