I think so, I hope it's right :)
There is no c in this equaltion
The two lines are horizontal, so the two triangles in the diagram are similar because their internal angles are the same. By the proportionality of similar triangles, x/(x+5)=(x-2)/(x+1). Solve the equation, x^2+x=x^2+3x-10, x=3x-10, x=5.
Answer:
k = 3.022
Step-by-step explanation:
Given that:
A spherical raindrop evaporates at a rate proportional to its surface area.
The surface area SA of a spherical object is given by the relation:
SA = 4πr²
Write down a differ- ential equation for its volume as a function as a function of time.
So; to differentiate Volume (V) in respect to time (t) ;then:
Likewise; we know known that the volume of a sphere V =
Thus, from above;
Thus; solving the differential:
So;
we are to find the constant proportionality K
If Volume V = 1 cm³ and the time = 10 sec
0.1 = - 4π k (0.3848 × 1)
0.1 = - 4π k × 0.3848
4π k = 0.3848/0.1
4π k = 3.848
k = 3.848/4π
k = 3.022
I think that it is b if i did the math right then it should be b