Triangle abc is shown below: triangle abc is shown. a is at 2, 1. b is at negative 1, 4. c is at 3, 7. if triangle abc is reflected over the x-axis, which of the following shows the coordinates for point c'?
(−3, 7)

(3, 7)

(−3, −7)

(3, −7)

Reflecting across the Y axis would make all the points on the triangle the same distance from the Y axis, just on the opposite side.

Point B is at X = -1, so when reflected across the Y axis would be at X = 1

The Y value would remain the same.

The new location for B would be (1,4)

please add graph for next time could help more

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 c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.