5: 4=30: _ what is the answer

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

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.

The tile along the edge of a triangular community pool needs to be replaced? ?