The amount of sleep that elementary school children get per night follows a Normal distribution with a mean of 9.5 hours and a standard deviation of 0.55 hours.

(a) Find the proportion of elementary school children who get between 9 and 10 hours of sleep per night. Sketch the

Normal curve and shade the area under the curve that is the answer to the question.

282 6/7 cm^2

step-by-step explanation:

answer: a and b

step-by-step explanation:

true

step-by-step explanation:

intersecting chords are just lines that intersect. so a line is equal to 180 degrees, so when it is intersected by another chord, then it create supplementary angles, and because the lines cross, vertical angels are also formed.

my apex says that it is false