The expression c-0.25c can be used to find the cost of an item on sale for 25% off. which expression below is equivalent to c-0.25c? a)0.25cb)0.75cc)1.25cd)0.75

A) 0.75c

Step-by-step explanation:

~The minuend of this expression is c, the subtrahend is 0.25c~

Let's pretend that "c" is anything, let's say they are cookies.

In the expression, you are taking 0.75 "cookies" away from the 1 "cookie"

So, it is just a simple subtraction problem! Now, solve that equation...

1cookie - 0.25 cookies = 0.75 cookies

or... 1c-0.25=0.75c

I hope this helps!

0.75c

Step-by-step explanation:

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! )