Which transformations map the strip pattern onto itself?
a) a horizontal translation and a 180 rotation
b) a horizontal translation and a reflection across a vertical line
c) a horizontal translation and a glide reflection
d) a horizontal translation only

D) a horizontal translation only

Step-by-step explanation:

A) The image create by a horizontal translation and a 180 degrees rotation : pdpdpdp

B) The image create by a horizontal translation and a reflection across a vertical line : bqbqbqb

C)The image create by a horizontal translation and a glide reflection : qbqbqbq

D)The image create by a translation only will : dpdpdpd

Therefore, the transformation map the strip pattern onto itself is a horizontal translation only.

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! )

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°