The number line below shows points x and y with coordinates -5 and 4 respectively Help plz.

What is the value of x when x + 7 = 21?

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

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.