Answer:
7 km
Step-by-step explanation:
2 hours 20 minutes is 2 and 1/3 hours. 3 * 2 and 1/3 = 3 * 7/3 = 7km.
Answer:
2.75 lbs
Step-by-step explanation:
because if you double 2.75, it equals 5.5
Answer:

Step-by-step explanation:
The formula for the area of a triangle is 
The triangles that can be made is the triangle that has legs 20 and 50 and the triangle that has legs 20 and 10.
Since there are 2 of each triangles, we get:

The answer that fits is the first option.
Answer:
49
Step-by-step explanation:
You would add 4+5+6+7+8+9+10 to get the sum of 49.