A study indicated that the citizens of Hillsdale wasted 8,390 gallons of water last year. This year, they wasted 90% more than that amount. How many gallons did the citizens waste this year?

In right triangle xyz, the right angle is located at vertex y. the length of line segment xy is 12.4 cm. the length of line segment yz is 15.1 cm. which is the approximate measure of angle yzx? 34.8° 39.4° 50.6° 55.2°