Find the coordinates for the center for this circle.
(x + 3)2 + (y - 5)2 = 25
03-5)
(-3.5)
(-5,3)

C. (-3, 5)

Step-by-step explanation:

The equation of a circle with center (h, k) and radius r is

(x - h)^2 + (y - k)^2 = r^2

You have

(x + 3)^2 + (y - 5)^2 = 25

which can be rewritten as

(x - (-3))^2 + (y - 5)^2 = 5^2

from which you see that the center of the radius is the point (-3, 5), and the radius is 5.

C. (-3, 5)

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! )

the answer is 31.27mph