Find the 10th term of the arithmetic sequence -2x-9, -5x-5, -8x-1, ...

Mathematics

1 answer:

mart [117]3 years ago

3 0

here's the solution,

first term (a) :

=》 -2x - 9

common difference (d) :

=》 -5x - 5 - (-2x - 9)

=》 -5x - 5 + 2x + 9

=》 -3x + 4

now,

10th term :

=》a + (n - 1)d

=》-2x - 9 + (10 - 1) × (-3x + 4)

=》-2x -9 + (9) × (-3x + 4)

=》-2x - 9 - 27x + 36

=》-29x + 27

You might be interested in

Twenty-six students apply to serve as an usher at a school function. Eight of the those applying are freshmen, 7 are sophomores,

Gelneren [198K]

Answer:

Step-by-step explanation:

from usatestprep:

The situation is not an example of uniform probability because freshmen, sophomores, juniors, and seniors do not have equal probabilities of being selected.; Uniform probability → equal probability of being selected

P(freshman) =

; P(sophomore) =

7 /

; P(junior) =

6 /

; P(senior) =

5 /

; unequal probabilities → not uniform

6 0

3 years ago

Read 2 more answers

Andrew and Sarah are tracking the number of steps they walk. Andrew records that he can walk 6000 steps in 50 minutes. Sarah wri

Leni [432]

Answer:

Andrew walks more steps than Sarah.

Step-by-step explanation:

The question is incomplete. The complete question is :

Andrew and Sarah are tracking the number of steps they walk. Andrew records that he can walk 6000 steps in 50 minutes. Sarah writes the equation y=118x, where y is the number of steps and x is the number of minutes she walks, to describe her step rate. This week, Andrew and Sarah each walk for a total of 5 hours. Who walks more steps?

Solution:

Given:

Andrew walks 6000 steps in 50 minutes.

Number of steps Sarah walks is given by the equation :

$y=118x$