Answer:
The common difference (or common ratio) = 0.75
Step-by-step explanation:
i) let the first term be = 80
ii) let the second term be = . r = 80 × r = 60 ∴ r = = 0.75
iii) let the third term be = . r = 60 × r = 45 ∴ r = = 0.75
iv) let the fourth term be = . r = 45 × r = 33.75 ∴ r = = 0.75
Therefore we can see that the series of numbers are part of a geometric progression and the first term is 80 and the common ratio = 0.75.
Turn 1 7/8 into 15/8
15/8 times 4/5 is60/40
60/40 is 1.5
Answer:
The answer is 30.
Step-by-step explanation:
All of those angles will add up to 360 degrees. Since 150 is the same as the angle across from it that means the other one is 150. Add those 2 together that gets 300. So what is left? It is 60. So divide 60 between those two angles and you get 30.