A garage door code has 5 digits. if no digit is repeated, how many codes are possible?

What is the solution of sqrt x+2-15=-3

X2 + y 2 = 36 x + y = 6 solve the system of equations.

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.