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2 years ago

5

What is 1231221 ÷ 272727÷0

1 answer:

xz_007 [3.2K]2 years ago

7 0

??? what type of question is that??

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a child has a collection of football cards. they are to be kept in a folder with 9 cards on each page.the child has 28 complete

maria [59]

Answer:

37.7

Step-by-step explanation:

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2 years ago

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What is the rate of change? how do you find it?

yarga [219]

In math, slope<span> is the ratio of the vertical and horizontal changes between </span>two points<span>on a surface or a line. The vertical change between </span>two points<span> is called the rise, and the horizontal change is called the run. The </span>slope<span> equals the rise divided by the run: . This simple equation is called the </span>slope formula<span>.</span>

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2 years ago

I need help this one is even harder please

RUDIKE [14]

Answer:

$-7\frac{1}{7}$

Step-by-step explanation:

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2 years ago

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The population of a certain community is known to increase at a rate proportional to the number of people present at time t. If

attashe74 [19]

Answer:

$t=7.85 years$

Step-by-step explanation:

We can write this rate as an ordinary differential equation.

$\frac{dP}{dt}=aP$

Where a is proportional constant, P the population variable, and t the time.

$\frac{dP}{P}=adt$

Integrating each side of the equation.

$\int \frac{dP}{P}=\int adt$

$ln(P)=at+c$

$P=e^{at+c}$

$P=e^{c}e^{at}=Ce^{at}$

To find C we need to use the initial condiction, it means evaluae P at t=0.

$P_{0}=Ce^{0}=C$

$P=P_{0}e^{at}$

Now, we use the sentence the population has doubled in 5 years.

$2P_{0}=P_{0}e^{a5}$

We can find "a" in this condition.

$2=e^{a5}$

$ln(2)=a5$

$a=\frac{ln(2)}{5}$

$a=0.14$

Finally, let's find how long will it take to triple.

$3P_{0}=P_{0}e^{0.14t}$

$3=e^{0.14t}$

$t=\frac{ln(3)}{0.14}$

$t=7.85 years$

I hope it helps you!

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2 years ago

George has baked 48 chocolate chip cookies and 64 snickerdoodle cookies

hoa [83]

Answer:

sorry i just needs pointso k ok

Step-by-step explanation:

but yea fien the answer is

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2 years ago