Which of the following is true for two vertical angles ABC and _DBE? OA) ZABC + m_DBE = 90°
B) m_ABC = m_DBE
C)
m ABC + m_DBE = 180°
D) m ABC = * * M_DBE

What is the rescursive formula for this geometric sequence? 7, -14, 28, -56

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.

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.