Solve the system of equations.
2x-3y=4
10x-15y=20
(5, 1)
(2, 0)
no solution
infinitely many solutions

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.

Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7·2^10 c. 7·2^9

Which expression is rational? 6. , square root two, square root 14, square root 49