Answer:



Step-by-step explanation:
Given




Required
Determine the measure of each angle
The angles in a triangle sum up t 180. i.e.

Since
, then 
can then be rewritten as:


Substitute values for B and C

Open Bracket

Collect Like Terms


Divide both sides by 23

To get the measure of each angle, substitute 11 for x in the expressions of B, C and D









A[1] = 14 . . . . . . . . . defines the first term
a[n+1] = a[n] -4 . . . says each term is 4 less than the one before it
The least common multiple of 18 and 42 is 126. Sorry I don't know how to explain it.
Answer:W=5x15
HTH
Step-by-step explanation:
Answer:
-7/15
Step-by-step explanation:
=-4/5 + 1/3
=(-12+5)/15
=-7/15