Working her way through high school kathy works two part-time jobs for a total of 26 hours a week job a pays six dollars per hour and job b pays 6.60 per hour how many hours did she work each job the week she made $163.20

she worked job A for 14 hours

She worked job B for 12 hours

Step-by-step explanation:

Let x represent the number of hours worked job A.

Let y represent the number of hours worked job B

Kathy works two part-time jobs for a total of 26 hours in a week. This means that

x + y = 26

Job A pays six dollars per hour and Job B pays 6.60 per hour and that week, she made $163.20

It means that

6x + 6.6y = 163.2 - - - - - - -1

Substituting x = 26 - y into equation 1, it becomes

6(26 - y) + 6.6y = 163.2

156 - 6y + 6.6y = 163.2

- 6y + 6.6y = 163.2 - 156

0.6y = 7.2

y = 7.2/0.6 = 12

x = 26 - y = 26 - 12

x = 14

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )

d

gimmee one of those gold crowns!

~coco