swishy24 swishy24
  • 20-05-2015
  • Mathematics
contestada

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

Respuesta :

naǫ
naǫ naǫ
  • 20-05-2015
[tex]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}[/tex]
Answer Link

Otras preguntas

by whom the San Antonio river walk and the Appalachian trail were funded?
The image below is a triangle drawn inside a circle with center O: Which of the following expressions shows the area, in square inches, of the circle? (π = 3.14
Hi, does anybody have any examples of services?
what should happen to germany now that the war is over
Dickens world as expressed through great expectations is mostly A. Dim B. Bright C. Optimistic D. Exciting
geometry help..........................
Georgia is jogging with a velocity of 4 m/s when she accelerates at 2 m/s2 for 3 seconds. How fast is Georgia running now?
write an equation for the circle with endpoints of a diameter (9, 4) and (-3, -2)
The series 10+17+24+31+38...
Describe what status offense is?