swishy24 swishy24

19-05-2015
Mathematics

Answered

find the 21st term of the arithmetic sequence: 18,23,28,33,...

Verified Answer :

20-05-2015

\(18,23,28,33,... \\ a_1=18 \\ d=5 \\ \\ a_n=a_1+d(n-1) \\ a_{21}=a_1+20d \\ a_{21}=18+20 \times 5 \\ a_{21}=18+100 \\ \boxed{a_{21}=118}\)

Answer Link

Related Questions

Is a cube a polygon Why or why not

ways in which social media shape longterm relationships among youth

Is 23 greater than 78

Dominic and Terrell plan to start their weekend backpacking trip on FRIDAY at 210 PM and return home on SUNDAY at 1130 AM How many days hours and minutes are th

30 tens 3tens 3 tents

What are four things cells need to do to maintain homeostasis

What number is 100000 more than seven hundred two thousand eightythree

Following the postwar boom of World War II the 1950s ushered in great concern over the nature of advertising Americans feared they were beinga brainwashed by th

what is 34 divided by 4 and please show your work

In which sentence is the underlined word the proper adjective formed from Africa A The African elephant is the largest land mammal B The Africa elephant is the