The complete question in the attached figure
we know that
<span>m∠BAC = 50°
</span><span>m∠CBA = 70°
and
</span>m∠BAC+m∠CBA+m∠ACB=180°
then
m∠ACB=180-[m∠BAC+m∠CBA]---------> 180°-[50°+70°]=60°
m∠ACB=60°
remember that
BC║DE
therefore
m∠ACB=m∠DEC
m∠DEC=60°
the answer is m∠DEC=60°
Answer: The conclusion of biography should remind the reader of the subject's achievements or actions. Briefly describe their greatest achievements so that the reader can remember why it is important or enlightening to learn about their life.
Step-by-step explanation:
Brainless please
Answer:
305 miles per hour
Step-by-step explanation:
61 miles per hour
61(5)= 305 miles/ hour
Step-by-step explanation:
Diameter = r × 2
Where r = 2m
D = 2×2 = 4m
C= (3.14) × 4
= 12.56
Answer: B. 105 mph
Step-by-step explanation: