Question

Math Help? Check my answers?


1. Find the next three terms in the sequence. 30, 22, 14, 6, ...
-3, -12, -21
-1, -8, -15**
-1, -2, 3,
-2, -10, -18

2. Find the next three terms in the sequence. 3, 6, 9, 12, ...
15, 18, 20
15, 19, 20
15, 18, 21
14, 18, 21**

3. Find the next three terms in the sequence. -1, 9, 19, 29, ...
38, 37, 32**
40, 51, 62,
39, 49, 59
38, 47, 56

Answer 1

1. wrong
2. wrong
3. wrong

Answer 2

Really? I'm not sure on how to solve these problems.

Answer 3

Now, let's stop guessing.

Can you tell me the difference in the first sequence, what do you do each time, to obtain the next term ?

Answer 4

Aren't the terms decreasing by 8 ?
So after 6 , you would have -2, -10, -18

Answer 5

yes, correct! So your answer for the first problem is option D.

I am sure you can do the rest of the problems similarly. (all sequences are arithmetic)

Answer 6

(all sequences are arithmetic in your 3 problems... but not always :) )

Answer 7

In number 2, the terms are increasing by 3. So, it would be 15, 18, & 21.

Answer 8

YES !

Answer 9

& Number 3 is -1, 9, 19, 29, adding 10 each time
So 29 + 10 = 39. So that answer would be 39, 49, and 59? :)

Answer 10

YES !

Answer 11

You are a good worker ! I like how you did it :)

Answer 12

Thanks for the help! :D

Answer 13

Just courteous, what class is this? Trigonometry ?

Answer 14

curious

Answer 15

Pre-Algebra.

Answer 16

Sequences in pre algebra ? I've also seen this topic in algebra 2, and trig, and even in some calculus 1 textbooks. I would say that you really have very advanced , strong level math course.

Answer 17

G☼☼D luck with rest of the work... @LydiaMartin121 you can alwasy tag me if you need.

Answer 18

Thanks! Bye. :)

Answer 19

yw