An experiment was performed by a scientific research team to determine the association between diet and occurrence of heart disease. Which of the following could be a potential confounding variable in the experiment?

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

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

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?