W + 3w = 90 is obviously wrong
Answer: 
Step-by-step explanation:
In the geometric sequence we can see each time we are dividing by 5. That is the same as multiplying by
so that is the common ratio.
Answer:
x=19(rounded) or 18.7882942281
Step-by-step explanation:
a^2+b^2=C^2
8^2+17^2=C^2
64+289= C^2
353=C^2

18.7882942281= C
19= C
#21 is 95 degrees
#22 is B