Answer:
465 minutes or 8 hours and 15 minutes
Step-by-step explanation:
her monthly bill was 72.25 and she has to pay 2.50 per month
72.25 - 2.50 = 69.75
69.75/ 0.15 = 645 minutes
645 minutes/ 60 minutes= 7.75 = 8 hours 15 minutes
The "rule of 72" says that the doubling time in years is approximately 72 divided by the interest rate in percent. To make the money grow by a factor of 4 requires that it double twice, so will take twice as long as the period to double once.
2×72/11.3 ≈ 12.7 . . . . years
_____
The "rule of 72" is an approximation. The actual quadrupling time for this interest rate and compounding is about 12.6 years. (The actual product of doubling time and nominal interest rate is about 71.25.)
Answer:
9.90 inches
Step-by-step explanation:
Area of a triangle is equal to base times height divided by 2.
Base and height is x.
Solve for x.
Answer:
0.00
Step-by-step explanation:
If the national average score on a standardized test is 1010, and the standard deviation is 200, where scores are normally distributed, to calculate the probability that a test taker scores at least 1600 on the test, we should first to calculate the z-score related to 1600. This z-score is 
, then, we are seeking P(Z > 2.95), where Z is normally distributed with mean 0 and standard deviation 1. Therefore, P(Z > 2.95) = 0.00
