Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Selena2345
Group Title
A Goblin Miner earns 1 cent the first day, 2 cents the second day 4 cents the third day, 8 cents the fourth day and so on doubling the amount each day. How much will the miner earn in 7 days ? 2 Weeks? 1 Month ( Make An Estimate Before Solving) Show/ Explain All Work
 2 years ago
 2 years ago
Selena2345 Group Title
A Goblin Miner earns 1 cent the first day, 2 cents the second day 4 cents the third day, 8 cents the fourth day and so on doubling the amount each day. How much will the miner earn in 7 days ? 2 Weeks? 1 Month ( Make An Estimate Before Solving) Show/ Explain All Work
 2 years ago
 2 years ago

This Question is Closed

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
So...
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
Um, I'm not so sure how to put this in an equation...
 2 years ago

Selena2345 Group TitleBest ResponseYou've already chosen the best response.0
it is not an equation
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
But, you can estimate obviously that it's about 70
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
You need an esquation to solve this...i think
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
Imma work this out first. (:
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
We see that the series whose sum gives the total number of cents follows a regular pattern: each new term added to it is a power of two. This is an example of a geometric series.
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
In our case, we are told that the number of cents given each day is double the number given the day before, which suggests that the ratio of this series is 2.
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
no. pennies given on second day 2  = 2 no. pennies given on first day 1 no. pennies given on third day 4  = 2 no. pennies given on second day 2 no. pennies given on fourth day 8  = 2 no. pennies given on third day 4
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
obviously, the ratio of the geometric series that gives the total number of cents on a particular day is 2.
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
we can use the fact that the sum of a geometric series (called S) with n terms whose ratio is r is this S = (first term)(1r^n)/(1r)
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
I think... ><'' not very expertise on this but had hw on this like 2 wks ago.
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
This means that for our series with a first term of 1 and a ratio of 2, we find the sum after n days = 1(1  2^n) / (1  2) =  (1  2^n) = 2^n  1
 2 years ago

Selena2345 Group TitleBest ResponseYou've already chosen the best response.0
are we done with the question christine
 2 years ago

xcrypt Group TitleBest ResponseYou've already chosen the best response.0
The equation would be: 2^x1, where x represents the day. substitute 7 for x and you have your answer
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
1 2^11 = 21 = 1 2 2^21 = 41 = 3 3 2^31 = 81 = 7 4 2^41 = 161 = 15
 2 years ago

xcrypt Group TitleBest ResponseYou've already chosen the best response.0
I am sorry, 2^(x1)
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
there you go x3
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
So...basically do the same for each day doubling it
 2 years ago

Selena2345 Group TitleBest ResponseYou've already chosen the best response.0
is the question whole finish
 2 years ago

ChristineToTheRescue Group TitleBest ResponseYou've already chosen the best response.0
5 2^51 = 181 = 17 and so forth
 2 years ago

Selena2345 Group TitleBest ResponseYou've already chosen the best response.0
is the answer finish now christine
 2 years ago

Selena2345 Group TitleBest ResponseYou've already chosen the best response.0
thank you christine
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.