<span>b. x=30°,y=13.1x=30°,y=13.1</span>
Seems to be a typo:
If you meant to say just "an article" then it would be 1/3 of the article per minute.
If it is supposed to say "half of an article" he would have read 1/6 of the article per minute. Hope this helps!
Isosceles triangle means both base angles are the same. SO,
42+42= 84
a triangle has 180 degrees. 180-84=96
the vertex angle is 96 degrees
