Question

Give the next two numbers in this pattern: 9, 4, -1, -6,... (Points : 1)
-11, -16
-4, -9
-12, -18

Answer 1

think "subtraction"

Answer 2

I know were subtracting but i got stumped

Answer 3

what are you subtracting each time? it is the same number

Answer 4

umm it was... i know im doing it wrong

Answer 5

\[9-?=4\]

Answer 6

5

Answer 7

zactly
subtracting 5 each time

Answer 8

okay so ... ummm... -11 , -16

Answer 9

looks good to me

Answer 10

yAY! thank you :0

Answer 11

Can you help me with another one

Answer 12

sure if i can

Answer 13

Give the next two numbers in this pattern: 0, 0.75, 1.5, 2.25, ... (Points : 1)
2.75, 3.25
3.75, 4.25
3, 3.75

Answer 14

this time think addition

Answer 15

what are you adding each time?

Answer 16

umm....

Answer 17

75 ?

Answer 18

yes

Answer 19

well actually \(.75\)

Answer 20

oh okay

Answer 21

keep adding them what do you get?

Answer 22

3 , 3.75

Answer 23

looks good to me

Answer 24

Perfect! I have a few more

Answer 25

are they hard?

Answer 26

No not really

Answer 27

Is the following an arithmetic sequence? 5, 0, -5, -10,... (Points : 1)
yes
no

Answer 28

are you subtracting the same number each time?

Answer 29

umm yes ?

Answer 30

yes, in fact you are subtracting 5 each time
so it is arithmetic, yes

Answer 31

Perfect!

What is the common difference in this sequence? 10, 17, 24, 31,... (Points : 1)
10
7
21
3.1

Answer 32

since it is a "common difference" you can find it by subtracting any term from the previous one
for example \[17-10\]

Answer 33

7

Answer 34

yup

Answer 35

The restt I have but could you check my answers?

Answer 36

ok

Answer 37

Write a formula for the sequence: 10, 17, 24, 31,... (Points : 1)
3 + 7n
10 + 7n
31 - 7n

3 + 7n right?

Answer 38

yes if you start at \(n=1\)

Answer 39

should I start at 10 then? 10 + 7n ?

Answer 40

no no your answer is right, leave it as it is

Answer 41

ohh okay

Answer 42

\(3+7n\) will work

Answer 43

Write a formula for this sequence: 8, -1, -10, -19,... (Points : 1)
8 - 9n
17 - 9n
-19 - 9n

Answer 44

again if you start at \(n=1\) it would be \(17-9n\)

Answer 45

the question does not say where to start right? so leave it as that

Answer 46

Thank you so much i gtg thank you for all your help!! :)

Answer 47

yw glad to help