Recall that the scores in Mr. Young’s class had a mean of 78 and a standard deviation of 8. About what percent of students scored between 78% and 94%?

A. 47.5%
B. 34%
C. 13.5%
D. 68%

B. 34%.

Step-by-step explanation:

94 - 78 = 16 which is 2 times the standard deviation from the mean.

For a normal distribution this is 34% of the total students.

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.

b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

brainliest