Points Which of the following pairs of functions are inverses of each other?
O A. f(x) = 2x® +9 and g(x) = ?
9
B. f(x) = +10 and g(x) = 4x - 10
12
X+18
C. f(x) = 12-18 and g(x)=
D. f(x) = 6x? -7 and g(x) = *?
SES

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west

the answer is d

step-by-step explanation:

you can also use mathway to get you answer + steps