Solve the following system of equations: x - 2y = 14
x + 3y = 9
(12, 1)
(-1,-12)
(12,-1)
(1,12)

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?