Answer:
boys
Step-by-step explanation:
Let
= total number of ninth graders. By knowing how many students there are in the grade, we can find for the number of boys.
(number of girls in ninth grade)


To find for the number of boys, we can use substitution:


∴ There are
boys in the class.
Hope this helps :)
The first false statement in the proof as it stands is in Line 5, where it is claimed that a line of length 2.83 is congruent to a line of length 4.47. This mistake cannot be corrected by adding lines to the proof.
_____
The first erroneous tactical move is in Line 4, where the length of DE is computed, rather than the length of FD. This mistake can be corrected by adding lines to the proof.
A correct SAS proof would use segment FD in Line 4, so it could be argued that the first mistake is there.
Answer:

Step-by-step explanation:
The difference between two consecutive elements is 11.

Hence 
Answer:
1.12
Step-by-step explanation:
0.68 + 0.44 = 1.12
Answer:
14:2
Step-by-step explanation:
1 coin is one part, one bill is one part
14:2