A mother is 5 times as old as her daughter. In 6 years she will be 3 times as old as her daughter. How old is the mother and her
1 answer:
You might be interested in
Answer:
see explanation
Step-by-step explanation:
The n th term of a geometric sequence is
= a
where a is the first term and r the common ratio
Given =
and r =
, then
a =
, that is
=
=
( cross- multiply )
32a = 2048 ( divide both sides by 32 )
a = 64 ← first term
Thus the explicit formula is
= 64
Answer: B. 0.59 plus or minus 0.090
Step-by-step explanation:
The confidence interval of population proportion is given by :-
Given : Sample size :
The proportion of students are receiving financial aid :
Significance level :
Critical value :
Then, the confidence interval of population proportion is given by :-
Hence, a 99% confidence interval to estimate the true proportion of students on financial aid = 0.59 plus or minus 0.090