1. evidence suggests that substrate concentration (mg/cm3 ) of influent to a reactor is normally distributed with µ = 0.30 and σ = 0.06.
a. what is the probability that the concentration exceeds .25?
b. what is the probability that the concentration is at most .10?
c. how would you characterize the largest 5% of all concentration values?

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

ummm seems that u didnt post the attachement !

what