Answer:
Step-by-step explanation:
The angle formed by 
and the angle marked as 
are co-interior angles and therefore must be supplementary (add up to 180 degrees).
Therefore, we have:
Answer:
blank 1: divisibility rules
blank 2: its last digit is 0 or 5
Answer: The common ratio is 4.
Step-by-step explanation:
Each term is four times the last term. The common ratio of a geometric sequence is the number that is being multiplied by each time to get the next term, which is four in this case.
To sum up, we only have the length of one side.
We need to find the width of the same side. -
20.5 x 20.5 = 420.25
To get the surface area, we multiply by six.
<u>Why?</u> There are six sides on a cube.
420.25 x 6 = 2521.5
Answer: 2521.5 cm
Answer: 70000000 in scientific notation is 7 x 10^7.
