20 tens= 2 tens = 20 ones
Answer:measurement of angle B is

<h3>Answer C is correct</h3>
Step-by-step explanation:

Answer:
62
Step-by-step explanation:
Angle Formed by Two Chords
= 1/2(sum of Intercepted Arcs)
RST = 1/2 ( 47+77)
= 1/2 (124)
= 62
Subtract the 18 from the 78 then multiply both sides by -1, then divide by 5.