An airplane is flying in the direction 148° with an airspeed of u = 855 kilometers per hour. Because of the wind, its groundspeed and direction are v = 760 kilometers per hour and 140°, respectively (see figure). Find the direction and speed of the wind. (Round your answers to one decimal place.)

-5, your answer was correct

b) yes

step-by-step explanation:

let the statements be named as,

statement 1: if the power has been cut, then the refrigerator does not work.

statement 2: the refrigerator does not work.

conclusion: the power has been cut

now, 'law of detachment states that if we have the statements given as,

1. if p, then q.

2. p

then, we get the true statement or conclusion as q'.

thus, on comparing, we get that,

p: if the power has been cut.

q: the refrigerator does not work.

so, the argument is true by the law of detachment.