Which equation could be used to find the value of x? Triangle DEF where angle E is a right angle. DE measures x. DF measures 55. Angle F measures 49 degrees. cos 49° = x over 55 cos 49° = 55 over x sin 49° = x over 55 sin 49° = 55 over x

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

In 2009, there were 1570 bears in a wildlife refuge. in 2010, the population had increased to approximately 1884 bears. if this trend continues and the bear population is increasing exponentially, how many bears will there be in 2018?