At least 5 coins are required:
50¢
25¢
10¢
10¢
1¢
N would be 6 for this one
10 + (-5) = 10 - 5 = 5
-11 + 20 = 20 + (-11) = 20 - 11 = 9
102 + (-1) = 102 - 1 = 101
<span>-20 + 60 = 60 + (-20) = 60 - 20 = 40 </span>
Answer:
16 square feet
Step-by-step explanation:
The apothem of a square is equal to half of the length of one side.
This means that twice the apothem is equal to the length of one side.
2*2 = 4 ft
To get the area I will multiply the two sides (squares have equal sides):
4*4 = 16 ft^2
1) 1hour 10minutes =

hours,
50 minutes =

hours
2) speed of plane against the wind =

3) speed of plane on the the wind =

4) (336-240):2=48miles/hours - speed of wind
5)336-48=288miles/hours - plane's speed <span>in still air
Answer: speed of wind is 48 miles/hours, speed of </span>plane in still air is 288 miles/hours