74 R28
So sorry if its incorrect!
All but √4/4 are irrational because the definition of an irrational number is a number that is never ending like pi, or a number that cannot be converted to a fraction. √1/4 is irrational because when you find the square root, it comes out with a number that is near impossible to convert to a fraction because it is a never ending decimal.
cos Θ = 4/9. take both sides by the inverse operation of cos.
cos^-1(Θ) = cos^-1(4/9)
Θ = 63.61°
tan(63.61°) = 2.02°
Y=1/4x -2
since the slope is already given , i put that as the m , then i found the y intercept by plugging the coordinates points in the equation , but the y intercept is also already given in the point (0,-2) . it already shows that when x is 0 y is -2. hope this helps
The correct answer is 18 minutes