Answer:
O is the center of the circle with radius IE(=ID=EF)
Step-by-step explanation:
Join all 3 points D, E, F, forming the triangle DEF.
Let the midpoint of EF be M and the midpoint of ED be N. (first picture)
Join point I to E, D and F.
Since IN is both an altitude and median to triangle EID, then triangle EID is an isosceles triangle, and IE=ID
similarly, we see that IE=IF.
conclusion: IE=ID=EF.
Answer:
(x+1.2)2=68.3
Step-by-step explanation:
(x+1.2)2=68.3
Answer:
14.14
Step-by-step explanation:
V=4
3πr3=4
3·π·1.53≈14.13717
Answer:
9,000 ×(1+0.02)^6
Step-by-step explanation:
put that in yer calculator
Answer: C,D are true
Step-by-step explanation:
