Step-by-step explanation:
1/4 + 1/2 + x = -3/4
1/4 + 2/4 + x = -3/4
3/4 + x = -3/4
-3/4. -3/4
x = - 1 1/2
Answer:
Use by Prime factorisation method
The cross product of two vectors gives a third vector

that is orthogonal to the first two.

Normalize this vector by dividing it by its norm:

To get another vector orthogonal to the first two, you can just change the sign and use

.
2300 cups because if 460 is 20%, multiply the 460 x 5 to get 100%