Step-by-step explanation:
step one: *multiply the negative 9 with the 5j.
which which will come out to be -45j
step 2: now now multiply the -9 with the k. which it comes out to be negative 9k.
step 3: -45j + -9k
The third answer option is correct. sqrt(x) = x^(1/2). So sqrt(121) = 121^(1/2).
That is a 45 degree angle on the side
