Please this is my last point I really need help
Show workings

x = 14.375

Step-by-step explanation:

Since 2 sides are congruent then the triangle is isosceles and the base angles are congruent, both (4x - 15)

The sum of the 3 angles in the triangle = 180°

sum the angles and equate to 180

4x - 15 + 4x - 15 + 95 = 180 , that is

8x + 65 = 180 ( subtract 65 from both sides )

8x = 115 ( divide both sides by 8 )

x = 14.375

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! )