To solve for x in terms of b, simply treat b as a number, and solve for x as usual: first of all, we expand the left hand side:

Subtract 10 from both sides:

Divide both sides by -2b:

This means that in particular, if we set
, we have

Answer:
its c because b is a right angle triangle
thats how i solved it if there is a mistake tell me
It is B, 40/19. Tip: multiply everything by 8.
Adjacent angles, and x = 21.
90 - 69 = 21.
Easy here OK so what you do is multiply 2 times 6 and it is 12 then do 2 times 12 which is 24 so Tanya is 24 hope I helped!