Answer:

Step-by-step explanation:
For this case we need a line parallel to the plane x z and yz. And by definition of parallel we see that the intersection between the xz and yz plane is the z axis. And we can take the following unitary vector to construct the parametric equations:

Or any factor of u but for simplicity let's take the unitary vector.
Then the parametric equations are given by:



Where the point given 
And then since we have everything we can replace like this:




There you go it’s not Oscar but it’s the same question
what? idk, this is int even math.
Answer:
To solve this one, simply use the equation (600/2.5)=(x/1)
then solve for x. that will give you the speed in kilometers per hour
Answer:
n=54
Step-by-step explanation:
Since this is a proportion problem, you have cross mulitply.
7n=9x42
7n=378
n=54