The length of human pregnancies from conception to birth approximates a normal distribution with a mean of 264 days and a standard deviation of 14 days. What proportion of
all pregnancies will last between 242 and 268 days (roughly between 8 and 9 months)
a.
0.554
b. 0.387
C. 0.768
d. 0.897

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

step-by-step explanation:

the true ones are a b and d

answer: i dont know but if you try hard you will get it right : )

step-by-step explanation: