Let the set of all Odd multiples of 9 between 2 and 82 be denoted by D, then, using set-builder notation,

The odd multiples of 9,
, in the range
form the set

Each member of the set is a term of the arithmetic progression

where the values of
range from 0 to 4, or 
Putting these facts together, we get the result

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Answer:
The top one
Step-by-step explanation:
Just count how many are in each catagory
Answer:
78
Step-by-step explanation:
Remark
There are two similar triangles in the diagram: ΔYZX and ΔVWX.
That being true a ratio can be set up as
VW / ZY = WX / XZ
Givens
VW = 104
ZY = 8
WX = ?
XZ = 6
Solution
104 / 8 = WX / 6
104 * 6 / 8 = WX
WX = 78
So the width of the lake is 78 meters
Answer:
C
Step-by-step explanation:
Answer:
6.5
Step-by-step explanation:
If M is the midpoint of PQ, PM is congruent to MQ. Midpoint means middle. So, the midpoint divides PQ in half. PQ = 13, and 13/2 = 6.5.