Me pueden ayudar yo no a lo inglés y necesito ayuda

98 point question what is the record for most points in one

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

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.