Answer:
B
Step-by-step explanation:
You complete the square <span />
2/3 hour is 40 minutes. 1 3/4 hour is 1 hour and 45 minutes. So she spent 1 hour and 5 minutes or 1 1/12 hour longer doing homework.
Answer: A number is divisible by 3 if the sum of its digits is divisible by 3. A number is divisible by 9 if the sum of its digits is divisible by 9. And a number is divisible by 6 if it is divisible by 2 (even number) and by 3.
Angle of wind from west = 45°
x-component of wind:
Wx = 30cos(45)
= 21.1 m/s
The x component of the plane's speed should cancel this while the y component should remain 100 m/s
Py = Psin(∅)
100 = Psin(∅)
P = 100/sin(∅)
Px = Pcos(∅)
P = 21.1/cos(∅)
100/sin(∅) = 21.1/cos(∅)
tan(∅) = 100/21.1
∅ = 78.1° north from the west direction.