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 ( 78+ )
Otras preguntas
Which shape can be classified as a rectangle? Rhombus Square Trapezoid Parallelogram (1 answer choice)
pls help me with is question
i need number 7 pls help :))
If blood flow in the capillaries of the alevoli was reduced what would be the effect?
An epic is a long narrative poem in which a heroic protagonist engages in an action of great mythic or historical significance. What is mythical about Beowulf's
Nonuniform Inputs, Equivalent Units Terry Linens Inc. manufactures bed and bath linens. The bath linens department sews terry cloth into towels of various sizes
Please answer this correctly
Example 1: the two dimensional points P1(0,0) and P2(1,0) and the two tangents P', (1,1) and P2 (0,-1).find the equation of the curve P(u).
Homer states that his rocket fell for 14 seconds and estimatesthat the rocket’s altitude was 3000 feet. Use the formula to find the actualdistance, in feet, tha
PLEASE HELP!!! How many 2-digit numbers are among the terms of the arithmetic sequence 2, 7, 12, 17, ...?
