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anonymous
 one year ago
Help please.......
A computer can perform c calculations in s seconds. How many minutes will it take the computer to perform k calculations?
a. 60ks/c
b. ks/c
c. ks/60c
d. 60c/ks
e. k/60cs
anonymous
 one year ago
Help please....... A computer can perform c calculations in s seconds. How many minutes will it take the computer to perform k calculations? a. 60ks/c b. ks/c c. ks/60c d. 60c/ks e. k/60cs

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.060 sec in 1 min so i think its not b

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i know the answer i want to know how to do it.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0The speed of calculations is: \(speed ~of~ calculations = \dfrac{calculations}{time} \) \(speed ~of~calculations = \dfrac{c}{s} \dfrac{calculations}{second} \) \(time = \dfrac{calculations}{speeedd~of~calculations} \) \(\dfrac{1 ~minute}{60 ~seconds} = 1\) \(time = \dfrac{k~calculations}{\frac{c~calculations}{s~seconds}} = \dfrac{ks}{c} seconds \times \dfrac{60~seconds}{1~minute} = \dfrac{60ks}{c} per ~minute\)

phi
 one year ago
Best ResponseYou've already chosen the best response.2***A computer can perform c calculations in s seconds. How many minutes will it take the computer to perform k calculations?**** we are given a rate c calcs per s seconds rate*time = amount so \[ \frac{c \ calcs}{s \ secs} \cdot t = k \ calcs\] solve for t \[ t = \frac{k\ s \ secs}{c} \] that is the time in seconds. if we mutliply by 1 minute/60 secs \[ t = \frac{k\ s}{c} \ \cancel{seconds} \cdot \frac{1 \ minute}{60 \ \cancel{seconds}}\\ t= \frac{k s}{60c} \ mins \]

phi
 one year ago
Best ResponseYou've already chosen the best response.2mathstudent messed up the conversion from seconds to minutes.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Is that a formula? The speed of calculations thing he mentioned?

phi
 one year ago
Best ResponseYou've already chosen the best response.2rate * time = distance is a formula you learn to figure out how far you go at a given speed. but many problems are similar to this, and can use the same idea when I see amount per time I think "rate" and see if rate * time = amount makes sense. (It usually does)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440458170535:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i don't understand from there to be honest

phi
 one year ago
Best ResponseYou've already chosen the best response.2what does "x" represent in your ratio?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0# of calculations per minute

phi
 one year ago
Best ResponseYou've already chosen the best response.2good. so x is a rate: calculations per minute so use rate * time = amount we know the rate. we are given an amount (k) so we can find time , and it will be in minutes.

phi
 one year ago
Best ResponseYou've already chosen the best response.2it takes practice to think "clearly". Lots of practice.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea lots of practice ^_^ thanks phi!!

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0@phi Thanks for pointing it out. \(time = \dfrac{k~calculations}{\frac{c~calculations}{s~seconds}} = \dfrac{ks}{c} \cancel{seconds} \times \dfrac{1~minute}{60~\cancel{seconds}} = \dfrac{ks}{60c} ~minute\)
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