The common difference is 19-7 = 31-19 = 12, so this is an arithmetic sequence. The initial term (when n=1) is 7.
The explicit formula for the terms of an arithmetic sequence is
an = a1 + d(n-1)
where "a1" is the first term and "d" is the common difference. The formula that matches a1=7 and d=12 is
B. a(n) = 7+(n-1)·12
We can check the end terms first
for
(a+b)(c+d), the first term of the expanded is ac and the last term is bd
so
the expanded is x^3 and last is +7
jane will have a lst term of -7 so no
mariah wil have last term of -7 as well, so no
only rojer and nethan have last tem of +7
so we can do the rest of it by doing the OL part of FOIL
do either roger or nethan
let's do nethan
F=x^3
O=-7x
I=-x^2
L=7
yep
it is nethan
Answer:
(9v + 4) / 6v.
Step-by-step explanation:
6/4 + 4/6v
The LCD of 4 and 6v is 12v.
6/4 + 4/6v
= (6* 3v + 8) / 12v
= (18v + 8)/12v
= 2(9v + 4) / 12v
= (9v + 4) / 6v.
Answer:
1/5
Step-by-step explanation:
If 3/15 of his shirts are blue it means that those are the odds of him picking a blue one (at random)
3/15 = 1/5