Answer:
The differential equation is
dx/dt - Kx^4 = 0
Step-by-step explanation:
Let V represent the velocity of the particle moving along a straight line at time t.
We have the position to be x.
Then we have that
V is proportional to x^4
=> V = Kx^4
Where K is constant of proportionality.
Velocity is the derivative of the position vector with respect to time t, so we can write
V = dx/dt
And then
dx/dt = Kx^4
So that
dx/dt - Kx^4 = 0
This is the differential equation
Answer: C
Step-by-step explanation:
Crown?
X = 6. This is a vertical line. Therefore has no slope.
To do linear equations, basically, just imagine it with an equals sign. It is pretty much the same as normal algebra, so it's not too confusing.
An example of a linear equation is 3x - 7 = 11
with this, your objective is to get 'x' on its own and to do this, do inverse operations (the opposite to what is actually done)
For instance, to get '3x' on its own, you must add 7.
So do this for both sides to give you
3x = 18
Yeah?
Now you must get 'x' on its own. It currently has 3 x's at the moment, so you must divide it by 3 to give you one 'x'. A rule with these - what you do to one side you must do to the other.
So this means that if you divide 3x by 3, you must divide 18 by 3.
This leaves you with x = 6.
Subtract ; 68 - 24 =44 so that means Sarah is 44 years old.
