K R
L
P
Triangle JKL and triangle PQR are shown above. If 4
is congruent to ZP, which of the following must be
true in order to prove that triangles JKL and PQR are
congruent?
A. ZLS ZR and JL = PR
B. KL = QR and PR = JL
C. JK = PQ and KL = QR
D. ZK = ZQ and ZLE ZR

first one because it can't have a fraction in it

step-by-step explanation:

hm let me think hm think think hm think yes

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