James defines an angle as "a figure consisting of two rays." His statement is not precise enough because he should specify that O the rays must be collinear
O the rays must form a right angle
O the rays must have a common endpoint
O the rays must continue in one direction forever

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

Ineed me i stuck and i don’t want to get it wrong

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.