She began with 10. She has 11. Take away the 6 she just bought and that leaves 5. But she had sold half and ended up with 5. So she started with 10!
Answer:
55 minutes
Step-by-step explanation:
Use a proportion.
x = the number of minutes.

Answer:
1:3
Step-by-step explanation:
Model = 5 inches
Real car = 15 feet
5:15
÷5
1:3
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
2*pi - sqrt(3)
pi = 3.14159
2pi = 6.283184
sqrt(3) = 1.73205
Answer
6.283184 - 1.73205
4.51133