normal Distribution has a mean of 50 and Standard deviation of 5 Find the probability that a randomly selected x-value from the distribution is in the given interval between 40 and 55​

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet

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

is there any other information given for this problem? this is not enough information.

the correct answer is

jeremy can row 1.333 miles per hour.