Think back to Sabrina's painting situation from the introduction. Sabrina has to paint a total area of 1,600 square feet. Every weekend, she paints half of the area that remains to be painted. After four weekends, she wants to know how much more of the total area she painted the first weekend than the subsequent weekends. First you will find the area Sabrina painted using plain multiplication. You'll use this work to check answers you come up with later. Part A Write a numerical expression that represents the area Sabrina painted the first weekend. Using this numerical expression, find the area that Sabrina painted the first weekend.

1) Numerical expression that represents the area Sabrina painted the first weekend:

2) Area that Sabrina painted the first weekend:

3) How much more of the total area she painted the first weekend than in the subsequent 3 weekends:

Explanation:

1) Data:

2) Write a numerical expression that represents the area Sabrina painted the first weekend:

3) Find the area that Sabrina painted the first weekend.

Compute:

4) Find how much she painted after four weeks.

Total area painted during those three weekends:

5) Find how much more of the total area she painted the first weekend than in the subsequent 3 weekends.

This is the area she painted the first weekend, 800ft², less the area she painted the subsequent 3 weekends, 700ft²:

800 square feet

Step-by-step explanation:

The total area that Sabrina needs to paint is 1,600 square feet. On the first weekend, she paints half of the area, which is, ( · 1,600), or 800 square feet.

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! )

c

step-by-step explanation: