What is the measure of one angle in the regular decagon?

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?

What does the sign of the slope tell you about a line?