document.write( "Question 59350: Hello tutors could someone help with these word problems thanks Tine!\r
\n" );
document.write( "\n" );
document.write( "2) Use the geometric sequence of numbers 1, 3, 9, 27, … to find the following:
\n" );
document.write( "a) What is r, the ratio between 2 consecutive terms?
\n" );
document.write( "Answer:
\n" );
document.write( "Show work in this space. \r
\n" );
document.write( "
\n" );
document.write( "
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "b) Using the formula for the nth term of a geometric sequence, what is the 10th term?
\n" );
document.write( "Answer:
\n" );
document.write( "Show work in this space. \r
\n" );
document.write( "
\n" );
document.write( "
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "c) Using the formula for the sum of a geometric series, what is the sum of the first 10 terms?
\n" );
document.write( "Answer:
\n" );
document.write( "Show work in this space. \r
\n" );
document.write( "
\n" );
document.write( "
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #41232 by tutorcecilia(2152)![]() ![]() You can put this solution on YOUR website! 2) Use the geometric sequence of numbers 1, 3, 9, 27, … to find the following: \n" ); document.write( "a) What is r, the ratio between 2 consecutive terms? \n" ); document.write( "Answer: 3 \n" ); document.write( "Show work in this space. \n" ); document.write( "To find the ratio, divide consecutive numbers, such as: \n" ); document.write( "3/1=3 \n" ); document.write( "9/3=3 \n" ); document.write( "27=3, therefore the ratio = 3\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "b) Using the formula for the nth term of a geometric sequence, what is the 10th term? \n" ); document.write( "Answer: 19683 \n" ); document.write( "Show work in this space. \n" ); document.write( "Use the formula an=(a1)r^(n-1) \n" ); document.write( "an=the nth term you are looking for \n" ); document.write( "a1=the value of the first term \n" ); document.write( "r=the ration \n" ); document.write( "n=the number of the term you are looking for \n" ); document.write( "So, to find the 10th term, plug-in the values: \n" ); document.write( "a(10th term)=(1)(3)^(10-1)=19683\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "c) Using the formula for the sum of a geometric series, what is the sum of the first 10 terms? \n" ); document.write( "Answer: 29,524 \n" ); document.write( "Sn=a1(1-r^n) /(1-r) \n" ); document.write( "Sn=the sum of the first nth terms \n" ); document.write( "a1=the value of the first term \n" ); document.write( "r=the ratio \n" ); document.write( "n=the number of the term \n" ); document.write( "S(sum of the 10th term)=(1)((1-3^10) / (1-3) \n" ); document.write( "S(10th)=29,524\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |