Answer:
40
Step-by-step explanation:
if 3/8 equals 15 that means 1/8 equals 5 because 15/3=5. now if we multiply 5 by 8 then we get 40 years
Https://youtu.be/5C9LBF3b65s this should help you understand it
Answer:
137°
Step-by-step explanation:
Observe the given figure.
Here, angle T and R are the inscribed angles.
And sum of inscribed angles is half of measure of intercepted arcs.
Since, the measure of intercepted arcs is 360 degrees.
Therefore, 

Hence, the sum of the two angles is 180 degrees.
Therefore, these are the supplementary angles.
Therefore, angle T and angle R are supplementary angles.
Hence, proved.
Eight hundred ninety four thousand, two hundred and seventeen. I hope this helps.