Answer:
A geometric series has a positive common ratio r. The series has a sum to infinity of 9 and the
sum of the first two terms is 5. Find the first four terms of the series.
Step-by-step explanation:
A geometric series has a positive common ratio r. The series has a sum to infinity of 9 and the
sum of the first two terms is 5. Find the first four terms of the series.
Answer:
The answer is A.
Step-by-step explanation:
The angles add up to be 180°, which makes a supplementary relationship.
Answer:
Terry initially had £390
Step-by-step explanation:
The ratio of the original amount is 3:7
Let the original amount Terry has be t and the original amount Faye has be f
3/7 = t/f
or simply 3f = 7t ••••••(i)
Terry putting 220 means he now has
t + 220
Faye withdrew 300
He now has f-300
These values are equal
t + 220 = f-300
f = t+220+300
f = t + 520 ••••••(ii)
Put ii into i
3(t + 520) = 7t
3t + 1560 = 7t
7t-3t = 1560
4t = 1560
t = 1560/4
t = 390
Answer:
Step-by-step explanation:
Probability (P) is calculated as
P = 
The first required outcome is a red sweet from a total of 3 + 5 = 8
P( red) = 
There are now 2 red left and a count of 7, since 1 has been eaten, thus
P( second red ) = 
P( red and red ) = × = 
=
Answer:
d = 2.54951
Step-by-step explanation:
For:
(X1, Y1) = (4, 2)
(X2, Y2) = (4.5, 4.5)
d = \sqrt {(4.5 - 4)^2 + (4.5 - 2)^2}
