siennaforstiep7s2uv siennaforstiep7s2uv

26-04-2018
Mathematics

contestada

Find a general term a for the geometric sequence: a3=2, a4=17

Find a general term a for the geometric sequence a32 a417 class=

Respuesta :

mkryukova19 mkryukova19

26-04-2018

a(n)=a(1)+d(n-1)

a(1)=8

a(4)= 8+d(4-1)
17=8+d*3
17-8=3d
9 =3d
d=3

a(n)= 8 +3(n-1) Sometimes it is required like this.

Sometimes , it is required to simplify more
a(n)=8+3n-3=5+3n
a(n)=5+3n

Answer Link

Otras preguntas

In simplified form, V18 is

If f(x)=2x+2and g(x)=x^3, what is (g•f)(2)

A very hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. The ball rebounds back at essentially the same speed. I

Insects, in contrast to chordates, have what feature in their nervous system? A. Nerve net B. Ventral nerve cord C. No brain D. Dorsal nerve cord

The number of possible solutions of a polynomial can be found by looking at...

11 iDe compras! Belén es una profesional en las compras. Ahora describe sus estrategias. Completa las siguientes oraciones con una palabra o un término (term) d

Which function has an inverse function? A.f(x)= |x+3|/5 B. f(x)= x^5-3 C. f(x)= x^4/7+27 D. f(x)= 1/x²

A particle travels in a circular orbit of radius 21 m. Its speed is changing at a rate of 23.1 m/s2 at an instant when its speed is 37.2 m/s. What is the magnit

a swimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?

which of the binomials below is a factor of this exression? 16x^2+40xy+25y^2 A.4x-5y B. 2x-5y C.4x+5y D.2x+5y