Answer:
You mean ×3? if it is so 5-3x-3y. Hope it's correct
Let 1 angles be x, then its supplement is 180-x
x+x+12=180
2x=168
x=84
angles are 84 and 96
Answer:

Step-by-step explanation:
1. the midpoint of the side AC is:

2. if the coordinates of the points B and D are (7;3) and (0.5;2.5) respectively, then it is possible to make up the required equation of the median BD:

or

Answer:
17576
Step-by-step explanation:
Each of the three rotors contained the letters A through Z.
For the first rotor: There are 26 Possible Initial Settings
(A,B,...Z)
For the second rotor: There are 26 possible initial combination with the first rotor likewise.
For the third rotor:There are also 26 possible combinations with the first and second rotors.
Therefore:
Number of Possible Initial Setting of the three rotor=26*26*26=17576
Answer:
15 24/25
Step-by-step explanation: