Write the equation of a line with a slope of 2/3 going through the point (-15, -22)
1 answer:
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Answer:
Step-by-step explanation:
Let x be the number of adult tickets and y be the number of children's tickets.
We are given that there are total 12 people. Therefore, we can set:
Moreover, we are given that an adult ticket costs $21.50 and a child's ticket costs $14.75, therefore, cost of x adult tickets will be and cost of y children's ticket will be
. We can form the second equation by setting the total cost of tickets as:
Therefore, the required system of equations that could be used to find x and y will be:
If the sample size of population is 24 then the number of degrees of freedom for reading the t value is 23 which is option c.
Given sample size of 24,mean 23.
We have to determine the number of degrees of freedom which will be used to find the critical values of t.
Degree of freedom is the number of values in the final calculation of a statistic that are free to vary means that can change their values in the formula of calculating t.
t=(X-μ)/s/
where X is sample mean ,
μ is hypothsised population mean
s is sample standard deviation
n is sample size.
Degree of freedom=n-1
In this question n is 24 so the degree of freedom =24-1=23.
Hence the number of degrees of freedom for reading the t value is 23.
Learn more about degree of freedom at brainly.com/question/17305237
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Answer:
Option A is correct.
Step-by-step explanation:
Given: ;
for n = 2
=
for n =3
=
Simlarly , for n =4
=
and so on...
Common ratio(r) states that for a geometric sequence or geometric series, the common ratio is the ratio of a term to the previous term.
we have;
Now; by recursive formula for geometric series:
where is the first term and r is the common ratio:
Substitute the value of and
we have;
therefore, the explicit rule for the geometric sequence is;