Question

A rotor is run at the following speeds for intervals of 1 minute:

|Minute: | 1 | 2 | 3 | 4 |
|Speed: | 1 | 2 | 4 | 8 |

How many minutes will it take to reach a speed of 64 meters per second?

a.) 6
b.) 7
c.) 8
d.) 9

Thank you oh so very much. <3 Xoxoxo.

Answer 1

Hint; the speed is doubling every minute

Answer 2

finish the chart.
1 - 1
2 - 2
3 - 4
4- 8
5 - 10
6 - 12
7 - 14
8 - 16
9 - 18

Answer 3

Lets make it simple. C

Answer 4

10 - 20
11 - 22
12 - 24
14 - 26
15 - 28
16 - 30
18 - 32

Answer 5

19 - 34
20 - 36
21 - 38
22 - 40
ugh.. this is tedious. :( lol

Answer 6

Your answer is C lol

Answer 7

by the time u reach 64 you will be at your 8th interval. so u could just multiply :/

Answer 8

Lol, sorry. I know I look like an idiot. For some reason math just doesn't click... like at all for me. Haha.. Thank you though. ^_^

Answer 9

after 5 seconds the speed is 2*8 = 16
after 6 s it will be 2*16 = 32

after 7 s what would the speed be?

Answer 10

48 >_>

Answer 11

the answer is not 8

Answer 12

note the common factor is 2
each term is obtained from previous by multiplying by 2

Answer 13

8 is the closes man. or girl... idk

Answer 14

man

Answer 15

okay cool

Answer 16

Ooooh! So it's 2 * 32!

Answer 17

this sequence is called a geometric sequence with common ratio 2

Answer 18

yes

Answer 19

Yaaay so it's 7!

Answer 20

7th term = 2*32

Answer 21

yea

Answer 22

Gah! Thank you for your patience with me. It's greatly appreciated :)

Answer 23

yw