Test worth 70 points test score of 90%

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Measure of angles 31 (x+4) (3x+9) me

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.