What is the resultant of a and b if a = -2i - 5j and b = i - 4j?
O-i-9j
O 9i - 9j
O 6i + 6j
O9i+ 9j

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?