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2 years ago

Solve for r -13=r/9+8 R=

Mathematics

1 answer:

levacccp [35]2 years ago

5 0

The value of r is -21/9.

The term BODMAS, which stands for brackets of, division, multiplication, addition, and subtraction, might be used to simplify the expression. It specifies how to answer a mathematical expression in a particular order.

-13=r/9+8

-13-8=r/9

-21=r/9

-21/9=r

What is Expressions and Equations?

Algebraic expressions include variables, numbers, and operational signs. Examples include multiplication, division, exponentiation with the natural exponent, addition, and subtraction.

Fractional expression is the name given to division in an algebraic expression with variables.

Rational numbers are those that can be expressed in fractional form.

An algebraic expression is referred to as being irrational if it contains the variable's root or a fractional power with a changeable base.

To learn more about Expressions and Equations refer the above link:

brainly.com/question/723406

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Kazeer [188]

Answer:

$\frac{dP}{dt} = 2.4P(1 - \frac{P}{1200})$

Step-by-step explanation:

The logistic differential equation is as follows:

$\frac{dP}{dt} = rP(1 - \frac{P}{K})$

In this problem, we have that:

$K = 1200$ , which is the carring capacity of the population, that is, the maximum number of people allowed on the beach.

At 10 A.M., the number of people on the beach is 200 and is increasing at the rate of 400 per hour.

This means that $\frac{dP}{dt} = 400$ when $P = 200$ . With this, we can find r, that is, the growth rate,

$\frac{dP}{dt} = rP(1 - \frac{P}{K})$

$400 = 200r(1 - \frac{200}{1200})$

$166.67r = 400$

$r = 2.4$

So the differential equation is:

$\frac{dP}{dt} = rP(1 - \frac{P}{K})$

$\frac{dP}{dt} = 2.4P(1 - \frac{P}{1200})$

3 0

3 years ago

Solve it please 72:8

amm1812

9:1 because you divide both sides by 8. Hope this helps :)

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3 years ago

What is the slope of the line with points A and B?

marshall27 [118]

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3 years ago

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sdas [7]

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aleksandr82 [10.1K]

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3 years ago