Answer:
x+7=90 find the value of x
Step-by-step explanation:
Answer:
x = 7 is a solution.
x = -2 is an extraneous solution .
Answer:
Whats the question so that I can help?
Step-by-step explanation:
Step-by-step explanation:
one could be that all the angles add up to 180
180-71= 109
∠DBC and ∠ABC must add up to 109 degrees