The mass of potatoes sold loosely in a supermarket bin are normally distributed with a mean of 372 grams and a standard deviation of 6.3 grams. The bin contains 164 potatoes.
(a) How many of the potatoes in the bin are expected to have a mass of 380 grams or more?
Round your answer to the nearest whole number.
(b) What percent of the potatoes in the bin are expected to have a mass of less than 360 grams?
Round your answer to the nearest tenth of a percent.
C) What is the probability that a potato randomly selected from the bin will have a mass of at least 370
grams?
Round your answer to the nearest tenth of a percent

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3