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Write the first six terms of the arithmetic sequence with the first term, \(a_{1}\), and common difference, \(d\). \(a_{1}=6.3, d=0.25\)

Short Answer

Expert verified
The first six terms of the given arithmetic sequence are 6.3, 6.55, 6.8, 7.05, 7.3, and 7.55.

Step by step solution

01

Determine the value of \(a_{2}\)

Substitute the values of \(a_{1}\), \(d\), and \(n\) into the formula: \[a_{2} = a_{1} + (2-1)d = 6.3 + (1)(0.25) = 6.55.\] Thus, the second term is 6.55.
02

Determine the value of \(a_{3}\)

Use the formula again: \[a_{3} = a_{1} + (3-1)d = 6.3 + (2)(0.25) = 6.8.\] Thus, the third term is 6.8.
03

Determine the values of \(a_{4}\), \(a_{5}\), and \(a_{6}\)

Follow the same formula for \(a_{4}\), \(a_{5}\), and \(a_{6}\): \n \[a_{4} = a_{1} + (4-1)d = 6.3 + (3)(0.25) = 7.05,\] \[a_{5} = a_{1} + (5-1)d = 6.3 + (4)(0.25) = 7.3,\] and \[a_{6} = a_{1} + (6-1)d = 6.3 + (5)(0.25) = 7.55.\] Hence, the fourth term is 7.05, the fifth term is 7.3, and the sixth term is 7.55.

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Most popular questions from this chapter

Write the first six terms of the geometric sequence with the first term, \(a_{1}\), and common ratio, \(r\). \(a_{1}=2000, r=-1\)

You will develop geometric sequences that model the population growth for California and Texas, the two most populated U.S. states. The table shows the population of California for 2000 and 2010 , with estimates given by the U.S. Census Bureau for 2001 through \(2009 .\) $$ \begin{array}{|l|l|l|l|l|l|l|} \hline \text { Year } & \mathbf{2 0 0 0} & \mathbf{2 0 0 1} & \mathbf{2 0 0 2} & \mathbf{2 0 0 3} & \mathbf{2 0 0 4} & \mathbf{2 0 0 5} \\ \hline \begin{array}{l} \text { Population } \\ \text { in millions } \end{array} & 33.87 & 34.21 & 34.55 & 34.90 & 35.25 & 35.60 \\ \hline \end{array} $$ $$ \begin{array}{|l|l|l|l|l|l|} \hline \text { Year } & \mathbf{2 0 0 6} & \mathbf{2 0 0 7} & \mathbf{2 0 0 8} & \mathbf{2 0 0 9} & \mathbf{2 0 1 0} \\ \hline \begin{array}{l} \text { Population } \\ \text { in millions } \end{array} & 36.00 & 36.36 & 36.72 & 37.09 & 37.25 \\ \hline \end{array} $$ a. Divide the population for each year by the population in the preceding year. Round to two decimal places and show that California has a population increase that is approximately geometric. b. Write the general term of the geometric sequence modeling California's population, in millions, \(n\) years after \(1999 .\) c. Use your model from part (b) to project California's population, in millions, for the year 2020 . Round to two decimal places.

Find the indicated term for the geometric sequence with first term, \(a_{1}\), and common ratio, \(r\). Find \(a_{6}\), when \(a_{1}=-2, r=-3\).

Determine whether each sequence is arithmetic or geometric. Then find the next two terms. \(6,-6,6,-6, \ldots\)

Find the indicated term for the geometric sequence with first term, \(a_{1}\), and common ratio, \(r\). Find \(a_{8}\), when \(a_{1}=12, r=\frac{1}{2}\).

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