1.
In any trapezoid, the length of the midsegment is

substituting the known values:



2.
Notice that since D and have the same y-coordinate, then DE is horizontal, and since F and D have the same x-coordinate, FD is vertical.
Thus FD and DE are perpendicular, so the triangle FED is a right triangle.
The median drawn from the right angle, is equal to half the hypotenuse.
That is, |DO|=1/2 |FE|, thus |OE|=|OF|=|OD|, are all radii of the circle centered at O.
O is the midpoint of EF, and is found by the Midpoint formula:

Answer:
1. 14
2. (4, 3)
Answer:
18
Step-by-step explanation:
You'd use order of operations - so you'd solve inside the parenthesis first.
15 + ( 9 - 6 )
15 + ( 3 )
18
Answer: 17/2
Step-by-step explanation: 16 divided by 2 is eight and a half is left over so add it
Hope this helps go answer my question! :)
Answer: 2.34248*10^-4
Step-by-step explanation:
(2.35*10^-4)-(7.52*10^-7)
0.000235-0.000000752=0.000234248
Answer in Scientific Notation: 2.34248*10^-4
Answer:
77% decrease
Step-by-step explanation:
100 - 23 is 77. it makes it easier since the start number is 100!