contestada

Find the measure of each angle in triangle abc.
a= 48-x b=9x-38 c=90
A) a = 58 b=128 c= 90
B) a=128 b=58 c=90
C) a=38 b=52 c=90
D) a=52 b=38 c=90
No Guessing and show work thank you.

Respuesta :

lesliekolleroxrkcf
the 3 angles of a triangle must add to 180. always. since one of our angles (c) is given as 90 already, the other 2 must add too 180-90, or 90. the 2 angles are 48-x and 9x-38, which Sim to 8x+10. if 8x+10=90, then x=10 (I assume you are ok with the algebra). then a=38 and b=52