Alyssa spent half of her allowance going to the movies. she washed the family
car and earned 7 dollars. what is her weekly allowance if she ended with
17 dollars ?

With: label the vertices and all the elements needed. find x

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.

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.