Aprofessor at a local community college noted that the grades of his students were normally distributed with a mean of 74 and standard deviation of 10. the professor has informed us that 6.3 percent of his students received a's while only 2.5 percent of his students failed the course and received f's.
a. what is the minimum score needed to make an a?
b. what is the maximum score among those who received an f?
c. if there were 5 students who did not pass the course, how many students took the course?

hi there! my name is zalgo and i am here to you out today. the answer is pretty simple (in a way). this equation equals to 25.2!

i hope this answer !

"stay and stay proud! " - zalgo

$75.00

step-by-step explanation:

i = prt

i = 1,5000 * 0.025 * 2

i = 75

h * s * a

h = history teacher

s = science teacher

a =   art teacher.

i see no data table, but just multiply the number of history teachers, science teachers, and art teachers.

x^2 + 81

we can factor this using difference of square binomials.

rewrite the equation:

x^2 - (-81)

factor:

(a^2 - b^2) = (√a^2 + √b^2)(√a^2 - √b^2)

(x^2 - (-81) = (x + √-81)(x - √-81)

we can remove the - from under the radical by multiplying it by i.

(x^2 - (-81) = (x + i√81)(x - i√81)

(x^2 - (-81) = (x + 9i)(x - 9i)

we can check our answer by using foil:

x^2 - 9ix + 9ix - 81i^2

x^2 - 81^2

i^2 = -1

x^2 + 81