Will upvote which statement is true? i think its
a

a.
–14 + 21 = –24 + 17

b.
16 + (–6) > 24 + (–13)

c.
–14 + (–10) > 2 + (–28)

d.
–10 + (–8) > –12 + (–4)

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

this "question" looks more like a project is there any other info you can give me about this. it could be too complex for someone else to do on this website