O 1. What should always be the first statement in a formal proof? O Theorem
O Given
O Counterexample
O Conclusion

What is the smallest integer n such that n\sqrt{2} is greater than 20

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

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.