How do scientists know about the ordovician period

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Indicate the formula for the following conditions: p^c(n,r)=

Which of the following is not a solution to the inequality graphed below? (-2, -4)(-1, -5)(0, -3)(2, -1)which of the following is a solution to the inequality graphed below? select all that apply.(-3, -3)(-1, -1)(-3, -1)(2, 2)