What is the distance of Point A (4-i) from the origin of the complex plane?

Mathematics

1 answer:

Dima020 [189]3 years ago

3 0

Answer:

1st im not sure

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Help me with this question.thank u

rusak2 [61]

Answer:

see below

Step-by-step explanation:

P( yellow) = number of yellow sections / total sections

= 4/20

1/5

20%

4 0

3 years ago

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What is the quotient of the following rational expression?

anyanavicka [17]

What’s the expression?

3 0

3 years ago

A model for tumor growth is given by the Gompertz equation dV dt = a (In b-, In V) V where a >0 and b >0 are constants and

Xelga [282]

Answer:

$V(t) = b^{(1-e^{-at})}$

Step-by-step explanation:

We are given the following information in the question:

$\displaystyle\frac{dV}{dt} = a (In b - In V) V$

where a > 0 and b > 0.

$\displaystyle\frac{dV}{dt} = a (In b-In V) V\\\\\displaystyle\frac{dV}{dt} = -aV(ln\frac{V}{b})\\\\\frac{dV}{V(ln\frac{V}{b})} = (-a)dt\\\\\text{Put } ln\frac{V}{b} = z\\\\\text{Integrating both sides}\\\\\int \frac{dV}{V(ln\frac{V}{b})} = \int (-a)dt\\\\\text{We get}\\\\\int \frac{dz}{z} = \int (-a)dt\\\\\\\text{where C is the constant of integration}$