how many line segments are needed to connect 20 points in a plane so that each pair of points are the endpoints of a line segment

Drag the tiles to the boxes to form correct pairs. not all tiles will be used. match each set of vertices with the type of quadrilateral they form

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

Tyrone’s hourly wage is $18 and his net pay is 72% of his earnings. tyrone spends about $1,800 on his monthly expenses. if tyrone works 40 hours per week and has no other sources of income, what is his total monthly cash inflow? (hint: assume that there are 4 pay periods per month.)