Carly bought a can of paint. She used ¼ to paint a rocking chair, ⅕ to paint a bookcase, and the rest to paint a dollhouse. When she was finished painting, she had 1/10 of the paint left. How much paint did Carly use for the dollhouse?

11/20

Step-by-step explanation:

Let's add up all the fractional parts that we know about. I turned them into decimals since I have memorized their decimal expansions, but you can add them as fractions if you want. 0.25+0.2+0.1=0.45, or 45/100, 9/20. This means she used 9/20 of the paint for other things, (let's just assume she used the last tenth to paint other things as well). That means the other 11/20 was used for the dollhouse.

4.5/10 or 9/20 of paint.

Step-by-step explanation:

1/4 is equivalent to 5/20.

1/5 is equivalent to 4/20.

1/10 is equivalent to 2/20.

So for Dollhouse 9/20 of paint was used.

hi, i am not sure about this one but i think its d,

hope this !

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! )