Answer:
3 hr(s)
Step-by-step explanation:
20 km/1 hour
60km/20km = 3
The common factor of 8 and 16 are 1, 2, 4, and 8.
Answer:
You use the formula (y to the second power minus y to the first power minus the same formula with the two different points
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given: 
To find: 
Solution:
From the image, 
Put 
Therefore,
Answer:
∠B = 41°
Step-by-step explanation:
∠BCD is an exterior angle of the triangle
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
∠A and ∠ B are the 2 opposite interior angles, hence
∠A + ∠B = 113, that is
72 + ∠B = 113 ( subtract 72 from both sides )
∠B = 41°
