In triangle XYZ, m∠Z > m∠X + m∠Y. Which must be true about △XYZ? m∠X + m∠Z < 90°
m∠Y > 90°
∠X and∠Y are complementary
m∠X + m∠Y < 90°

Based on what you know about the location of the earth in relation to the sun, why is this called the goldilocks zone in other galaxies?

Which of the following is evidence to the past existence of glaciers?

Explain the value of statistics and other data to positive economics and to normative economics