Answer:
∠ACD= ∠BAC ( reason: CPCTC)
Yes because 3×2= 6 , 3×5= 15, 15 + 6 = 21
Combining those like terms would end as 3n.
Explanation: The end of a subtraction equation is basically just the negative number, except you add it to the other part.
For example, 2n is really -2n, and you just add -2n to 5n (which is positive,) and you get 3n.
90.42857143 or
90.4 to nearest decimal
