Answer:
1. 15
2. 8
Step-by-step explanation:
The two sequence are geometric progression GP, because they follow a constant multiple (common ratio)
The nth term of a GP is;
Tn = ar^(n-1)
Where;
a = first term
r = common ratio
For the first sequence;
The common ratio r is
r = T3/T2 = 540/90 = 6
r = 6
T2 = ar^(2-1) = ar
T2 = 90 = ar
Substituting the values of r;
90 = a × 6
a = 90/6
a = 15
First term = 15
2. The sam method applies here.
Common ratio r = T3/T2 = 128/32 = 4
r = 4
T2 = ar^(2-1) = ar
T2 = 32 = ar
Substituting the values of r;
32 = a × 4
a = 32/4
a = 8
First term = 8
Maybe write it down, like how you see other math problems.
And then solve it!
:D
Answer
B - 1/4
explanation
246 rounds up to 250. 1000/250=4, meaning 1/4 of the people surveyed liked green.
because 1/4 of the people surveyed so far liked green, it’s most likely that the next person will like green.
Answer:
2
Step-by-step explanation:
I thought that was all one equation lol this is very simple just plug in -3 for x
which is -3^2-3 which is -12
