If a stand age is 40 years with a 56789 pesos total cost at a rotation age and 54321 total income at a rotation age, what will be its land expectation value at
5% interest rate? Show your solution.​

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?