Your trying to rearrange the equation with v were the r was.
2( v - h ) / k = r
2( v - h ) k / k = rk
2( v - h ) = rk
2( v - h ) / 2 = rk / 2
v - h = rk / 2
v - h + h = rk / 2 + h
v = rk / 2 + h
Answer:
0.5
Step-by-step explanation:
Answer:
<h2><em><u> 42.8 in</u></em></h2>
Step-by-step explanation:
Step one:
given data
we are told that the expression for the depth of a lake after x years is given by

Required
The value of y when x= 4
Step two:
substitute the value of x in the expression to get y

<em><u>After 4 years the depth will increase by 42.8 in</u></em>
Y=-x^2 is just an inverted parabola, opening downward, with a vertex, its absolute maximum at (0,0) and decreasing without bound as x approaches ±oo