We separate equation by looking at x and y projection separately.
Let us look at the x projection first.
Motion starts with initial velocity

because there is no force acting along the x-axis we don't have any acceleration along the x-axis. Our equation would be:

Now our y equation will be a little bit more complicated. There is gravity working against our projectile and we also have to take into effect the hight from which the projectile is launched.
With all that in mind let us write the equation for y projection:

The term

represents gravity and as you can see it is negative, which means gravity is pulling our projectile down.
There is one more thing we can do. We can express initial velocity

in relation to circular motion used to launch the projectile.

Where r is the length of the letter used to launch the projectile, and

is angular velocity.
If we combine our x and y equations we can get the trajectory of our projectile.

This is the equation of a parabola. If you follow this link(https://www.desmos.com/calculator/vogcuygjhs) it will take to an interactive graph where you can see how trajectory looks like depending on some of the paramaters.
Solving an equation means finding the value of x which will make the equation true.
We need to undo whatever is done to x to get it by itself.

Conclusion:
Since we end up with an equation which is not TRUE, there is NO solution for this equation. If we graph both the equations, they will end up as a parallel lines which will never meet.
Answer: No, this is not a representative sample because each type of weed should be represented in proportion to the number of weeds actually present in the yard.
Step-by-step explanation:
A representative sample has to be in proportion, and the diagram shows that the greater part is not represented in proportion. Because it is not represented in proportion, it is not a representative sample.
Answer: C
Answer:
3526
Step-by-step explanation:
4300×3%=129
129×6=774
4300_774= 3526