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4 years ago

I need help solving this math problem

Mathematics

1 answer:

Ratling [72]4 years ago

8 0

The answer to to this equation is 88

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HELP ASAP PLEASSEE HLEP MEEEE

Lerok [7]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A given field mouse population satisfies the differential equation dp/dt=.4p-450 where p is the number of mice and t is the time

Flura [38]

Answer:

a) 7.78 months

b) 1116

Step-by-step explanation:

Given -

$\frac{dP}{dt} = 0.4p-450$

Integrating the above equation with respect to time, we get -

$\int\ \frac{dP}{0.4p-450} = \int\ dt\\$

let us define new variable x

$x = 0.4p - 450 \\dx = 0.4 dy$

substituting these values in above integral equation, we get -

$\frac{1}{0.4} \int\ \frac{dx}{x} = \int\ dt\\ln x = 0.4 t + C\\x = ce^{0.4t}$

$P (t) = \frac{C}{0.4} e^{0.4t} +1125\\$

at t = 0, P (0) = 1075, using this condition, we get -

$\frac{c}{0.4} = -50\\P(t) = 50 e^{0.4t} +1125 \\t = 7.78\\P(0) = 1125 - \frac{1125}{e^{4.8}} = 1116$

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3 years ago

Tion of your knowledge on the nature of roots:

MAXImum [283]

Answer:

The roots are not real.

Step-by-step explanation:

To prove : The roots of I/2 +9 (1-k) are real for all real values of k ?Solution :

The roots are real when discriminant is greater than equal to zero.

i.e b2-4ac>0 But the roots are imaginary therefore the roots of the given equation are not real for any value of k.If x²+kx+k=0, find the value of k, If the roots are real & equal.

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3 years ago

500 grams of quarters

ohaa [14]

Answer:

0.04409 quarter

Step-by-step explanation:

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3 years ago

-2 1/4 - -4/5 Please help me hurry!!!!

Vera_Pavlovna [14]

Answer:

-1.45

Step-by-step explanation:

-2 14--4/5=-1.45

8 0

3 years ago