Use that four ostrich feathers weigh 1.001b. how many milligrams dous each feather weigh? 1.oob loomg feathers i 113.yumy. teattus (1.13 xlos my heathers 13. a person is biking downhill at 55 km/hr. how many feet is this person going per second? 55 km hr 14. if it took a person 3.5 weeks to read their chemistry textbook, how many seco were they reading? 3.5 weeks 7 days 24 hours 60 min 7 weeks 7 days 24 hoy

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

hope this !

answer: 72: 111

step-by-step explanation: