Answer:
In order for the appropriate answer to be given, you need to include the original measurements as well.
Answer:
7
Step-by-step explanation:
By Basic proportionality theorem:

Answer:
70 degrees
Step-by-step explanation:
Measure of arc ABC is 128 degrees, so measure of arc BC is 128-90 = 38 degrees.
Meausure of arc BCD is 102 + 38 = 140 degrees, so measure of angle A is 140/2 = 70 degrees