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45 cm

Step-by-step explanation:

perimeter of a square is 4 equal sides. each is therefore 200 cm ÷ 4 = 50 cm each.

if each side is dilated by a factor of 0.9

then 50 cm × 0.9 = 45 cm

5

Step-by-step explanation:

if primemenster buy n

the answer is

5

answer: i can’t tell you that

step-by-step explanation:

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