beevus6258
beevus6258
03-10-2018
Mathematics
contestada
If an = n(n+2), what is a9?
20
99
108
120
Respuesta :
Kamikazeminem
Kamikazeminem
03-10-2018
[tex]a_{n} = n(n + 2) \\ a_{9} = 9(9 + 2) = 99[/tex]
Answer Link
Tucon
Tucon
03-10-2018
an = n(n+2)
⇒ a9 = 9(9+2) = 9 × 11 = 99
Answer Link
VER TODAS LAS RESPUESTAS ( 56+ )
Otras preguntas
You need to reformat your computer. After backing your data up and preparing the hard drive you need install the first software program call an operating system
Which events led to change in Europe and Asia during the late Middle Ages? Choose all answers that are correct. A. Fewer people lived in cities or towns, so far
Which revolutionary leader did President Calvin Coolidge describe as a “combined Benjamin Franklin and George Washington of China”? A. Mao Zedong B. Chiang Kai-
The United States government offered a(n) ___________ for sugar trade to give people an incentive to go to Hawaii. a. imperial grant b. subsidy c. export incent
Should I study to become an accountant or radiologist? I'm interested in both. Can't decide. Obviously a radiologist would be paid more, however an accountant w
You have 60 marbles in a jar, two of which are red. (so 2 red, 58 not red) You pick 10 at random. What is the chance that you draw both red marbles? Explanation
Which of the following statements best describes Napoleon’s role in the nineteenth century movements to unify Germany and Italy? A. Napoleon supported independe
Together, the Black Codes and actions of the Ku Klux Klan protected the rights of formerly enslaved people inspired most people to accept the new ways of life h
Which statement accurately describes one of the important events that led to the unification of Germany? A. King Wilhelm I disbanded the Prussian army to demons
A democratic government rules within limits set by the constitutional law and citizens right . elaborate
