Since adjacent angles in a parallelogram are supplementary (they add up to 180°), and ∠B is double as ∠A, you have this equation:
∠A + 2·∠A = 180°
From that you can find: 3·∠A = 180° ⇒ ∠A = 60°.
This should not be in the elementary school section I didn't even learn about this....
Answer:
The answer is 4 :)
Step-by-step explanation:
Answer:
Its hard to explain but essentially the zero in the 10 and 100 place cancels out the decimal essentially
Answer:

Step-by-step explanation:
Given,
The number of miles she walks every day = 
∵ 1 week = 7 days,
⇒ 1 day =
week,
Thus,
The number of miles she walks
week= 
⇒ The number of miles she walks in a week = 