Answer:
by <u>AAS</u>
Step-by-step explanation:
According to the following two triangles, 
and 
are congruent by <u>Angle-Angle-Side</u> (AAS), because there are two angles shown and share a side, which is in the middle between triangles.
Step-by-step explanation:
(3x+6x)+(9a-10a)
combine like terms
9x+-a
That's as far as it goes...
Sorry if it's wrong
Look at the equation backwards, its minus 6 every time. so therefore the ninth term would be 51. double check yourself count up + 6 til you get to the ninth term! :)
Answer:
acute Is the answer pretty sure
