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Nastasia [14]
4 years ago
13

Solving multi-step equations 8- 5y = -3y - 31

Mathematics
1 answer:
zavuch27 [327]4 years ago
3 0
your answer.... y=39/2
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Biologists stock a lake with 160
Nutka1998 [239]

Answer:

P ( t ) = \frac{9100.024}{1 + 55.875e^-^1^.^1^3^5^0^6^*^t}

Step-by-step explanation:

Solution:-

- We are given a logistic growth model of the fish population cultured. The logistic growth of fish population is modeled by the following equation:

                         P ( t ) = \frac{c}{1 + 55.875e^-^ 1^.^1^3^5^0^6^t}

Where,        c: the constant to be evaluated.

- We are given the initial conditions for the model where at t = 0. The initial population was given to be:

t = 0 ,              Po = 160

                       N ( carrying capacity ) = 9100

- After a year, t = 1. The population was tripled from the initial value. That is P ( 1 ) = Po*3 = 160*3 = 480.

- We will use the given logistic model and set P ( 1 ) = 480 and determine the constant ( c ) as follows:

                           P ( 1 ) = \frac{c}{1 + 55.875e^-^ 1^.^1^3^5^0^6^*^1} = 480\\\\c = 480* [ 1 + 55.875e^-^ 1^.^1^3^5^0^6]\\\\c = 9100.024

- The complete model can be written as:

                            P ( t ) = \frac{9100.024}{1 + 55.875e^-^1^.^1^3^5^0^6^*^t}

8 0
4 years ago
Help please math answer ASAP NO LINKS
Sidana [21]

5/11 is a fraction, so it is for sure a rational number and a real number.

Since it is a fraction, it is NOT irrational (which means "not rational" or "not a fraction).

It is NOT an integer, whole number, or natural number, becuase it is only a piece of a whole.  5/11 ≈ 0.454545..., and intergers, whole numbers, and natural numbers don't involve decimals.

5 0
3 years ago
Read 2 more answers
Whats is the slope of line that is perpendicular to the line y= -9x + 7
11Alexandr11 [23.1K]

Answer: 1/9

Step-by-step explanation:

The slope of this line is -9. The slope of the perpendicular line is the opposite reciprocal. The reciprocal of -9 is -1/9, the opposite of that is 1/9

3 0
3 years ago
On a particular day, the wind added 5 miles per hour to Alfonso's rate when he was cycling with the wind and subtracted 5 miles
Nata [24]

now, this is pretty much the same as the one before it with Jaime, so I'll do this without much fuss.

recall d = rt.

a = Alfonso's rate

with the wind his speed is a + 5, against it is a - 5, 60 miles with it and 30 miles against it, all in the same time of t hours.

\bf \begin{array}{lcccl} &\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\ &------&------&------\\ \textit{with the wind}&60&a+5&t\\ \textit{against the wind}&30&a-4&t \end{array} \\\\\\ \begin{cases} 60=(a+5)t\implies \frac{60}{a+5}=\boxed{t}\\\\ 30=(a-4)t\\ -------------\\ 30=(a-4)\left( \boxed{\frac{60}{a+5}} \right) \end{cases} \\\\\\ 30(a+5)=(a-4)60\implies 30a+150=60a-240 \\\\\\ 390=30a\implies \cfrac{390}{30}=a\implies 13=a

8 0
3 years ago
Weight is a measure of force affected by gravity. The Moon's
Reika [66]

I think I need to know what the cat weighs first...

4 0
3 years ago
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