Need with double checking!

what is the value of x in the triangle below? if the answer is not an integer, leave it in simplest radical form.

11√2 / 2 (not sure if it's this answer)

11√3 / 3

11√2 (not sure if it's this answer)

11√3

Write the sentence as an equation. b increased by 281 is d

Which statement about perfect cubes is true

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257