Does anyone know this?!?

J. 7

Step-by-step explanation:

RT is the same as SU, So, that means that XU is the same as RT ÷ 2. XU is 32 ÷ 2 which is 16.

3y - 5 = 16

3y = 16 + 5

3y = 21

3y/3 = 21/3

y = 7

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

answer is  

a.

5.2 inches

hope you get this right.