I think it is 3 but i'm not sure<span />
Answer:
1. 7.5
2. 7
3. 8
4. 1.44
5. 2
6. 4
Step-by-step explanation:
Use cross multiplication and then divide by the coefficient of x.
Here is how to solve number 1. Solve the rest of them like this.
2.5(15) = 5x
37.5 =5x
5 5
x=7.5
Please mark me brainliest and I hope this helps.
Answer:
The direction angle of vector v is equal to 
Step-by-step explanation:
Let

The vector v is given by




Remember that
The direction angle of the vector is equal to

substitute the values

