18cm would be the correct answer hope this helps
We let
a1 = first term
a2 = second term
a3 = third term
and so on
We are given with
a1 + a2 = 26
S5 (sum of five terms) = 35
The formula for the sum of terms is
Sn = (a1 + an) (n/2)
SO
35 = (a1 + a5) (5/2)
The formula for an arithmetic term is
an = a1 + d(n-1)
For
a2 = a1 + d
we know that
a1 + a2 = 26
Simply for a1, a2, and d. Then use the formula to get the other items asked.
Answer:
63
Step-by-step explanation:
You have to subtract 180 and 117 which is 63.
Answer:
Not possible
It doesn't factorise because we can't pull out any highest common multiple.
Also, to be able to factorise a quadratic, it must be in the general form of ax^2 + bx + c.
Hope this helps!
