EF is halfway between AD and BC.
Using the midpoint formula:
⇒
⇒
⇒
⇒
EF is
Using the midpoint formula:
⇒
⇒
⇒
⇒
EF is
could someone please help me answer this question? im trying to get in done as soon as possible so im willing to give brainliest
:)
1 answer:
You might be interested in
9514 1404 393
Answer:
B, D
Step-by-step explanation:
The quadratic expands to ...
(2n -1)² = (2n)² +2(2n)(-1) +(-1)² = 4n² -4n +1
The coefficients can be factored out of the sum, so ...
∑(4n²) = 4∑n² for example
The sum of 60 ones is 60:
So, the sum can be written as ...
_____
It appears that the key to choosing the correct answers is paying attention to signs.