Set up and solve a system of equations to solve the problem. Helene invested a total of $1,500 in two simple-interest bank accounts. One account paid 4% annual interest; the other paid 5% annual interest. The total amount of interest she earned after 1 year was $69. Find the amount invested in each account. Helene invested $ in the 4% interest account and $ in the 5% account.

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

Find cot x if sin x cot x csc x = √2