Find the norm of x⃗ and the unit vector u⃗ in the direction of x⃗ if
x⃗ =⎡⎣⎢⎢⎢4−21−2⎤⎦⎥⎥⎥.​

so the possibilities of the measurement of the side of the triangle are either it is longest side or not the longest side

when it is the longest side

s < 25 + 35s < 60

if it is not the longest side

35 < 25 + s10 < sso 10 < s < 60so the perimeter70 < p < 130

the answer is d

step-by-step explanation:

you can also use mathway to get you answer + steps