The nth term of any geometric sequence can be expressed as:
a(n)=ar^(n-1), a(n)=nth term, a=initial term, r=common ratio, n=term number...
We can easily see that the first term, a=-8
The common ratio is 4/-8=-2/4=1/-2=r=-1/2 so the rule is:
a(n)=-8(-1/2)^(n-1) so the tenth term is:
a(10)=-8(-1/2)^(10-1)
a(10)=-8(-1/2)^9
a(10)=1/64
1400 becaude 30% of 2000 is 600 and then you subtract that from 2000 to find 70% which is 1400
Any other irrational number. 0.4 is rational (ie., it can be written as a fraction), but rational+irrational is always irrational.
So examples would be π or √2. If you add those, the result is irrational.
Answer:
All of the above
Step-by-step explanation:
ALL of the above quadrilaterals have all these characteristics.
