The probability density function of the length of a cutting blade is f ( x ) = 1.25 for 74.6 < x < 75.4 millimeters. determine the following: a) upper p ( upper x < 75.2) = (round the answer to 3 decimal places.) b) upper p ( upper x < 74.8 ⁢ or upper x > 75.2 ) = c) if the specifications for this process are from 74.7 to 75.3 millimeters, what proportion of cutting blades meets specifications?

answer: 193

explanation:

200-7 = 193

180-142=38 for the acute angle next to the entry

90+38=128

180-128=52

a=52

step-by-step explanation:

lol 2

step-by-step explanation:

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0