Levites367
Levites367 Levites367
  • 20-07-2015
  • Mathematics
contestada

What is the 33rd term of this arithmetic sequence? 12, 7, 2, -3, -8, …
a. -158
b. -157
c. -148
d. -147

Respuesta :

naǫ
naǫ naǫ
  • 20-07-2015
[tex]12,7,2,-3,-8,... \\ \\ a_1=12 \\ d=a_2-a_1=7-12=-5 \\ \\ a_n=a_1+d(n-1) \\ a_{33}=12-5(33-1) \\ a_{33}=12-5 \times 32 \\ a_{33}=12-160 \\ a_{33}=-148[/tex]

The answer is C.
Answer Link

Otras preguntas

If a number increases from 47 to 70.5 what is the rate of increase?
what is the relationship between a fundamental note and its overtones
1 half minus five twelfths
x+3y=14 6x+3y=-6 is there a possible solution?
Which of the following DOES NOT have any rectangular faces? A. pentagonal prism B. hexagonal pyramid C. rectangular prism D. square pyramid
Solve the following equation algebraically. Represent your answer in simplest radical form, if necessary. x^2 + x = 30
A regular hexagonal pyramid whose base perimeter is 60cm has an altitude of 30cm. The volume of the pyramid is??
the top layer of trees that form the canopy
Expand and simplify these (X+6) (x+9) (X-5) (x+2) (X-1)(x-7) (4x+9)(3x+8) (3x-8)(2x-1) (X+9) ^2(squared) (3x+2)^2
How much time is needed for a car to accelerate from 8.0 m/s to speed of 22 m/s if the acceleration is 3.0 m/s^2?