A binomial event has n = 20 trials. The probability of success for each trial is 0.20. Let x be the number of successes of the event during the 20 trials. What is the probability that x is at least 13?

the answer to this question is 3/19

step-by-step explanation:

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)

answer4 to the second power is 16

and 4 to the third power is 64,