What is [nine x squared multiplied by thirty six y squared plus nine x squared multiplied by 4z squared? 2.what is 2z multiplied by thirty six squared minus 2z squared multiplied by 4z squared
Anyone who answers that will be marked brainliest now. Good luck

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.