The weight of an organ in adult males has a bell-shaped distribution with a mean of 325 grams and a standard deviation of 35 grams. use the empirical rule to determine the following.
(a) about 99.7% of organs will be between what weights?
(b) what percentage of organs weighs between 255 grams and 395 grams?
(c) what percentage of organs weighs less than 255 grams or more than 395 grams?
(d) what percentage of organs weighs between 255 grams and 360 grams?

mark brainliest

step-by-step explanation:

2 tens + 6 ones

1 ten + 16 ones

0 tens + 26 ones

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

15.36 per mile

but forgot to round

i am pretty sure