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4 years ago

Which regular polygon can be drawn using rotations?

Mathematics

2 answers:

Lena [83]4 years ago

6 0

<span>11-gon hope this helps ;)
</span>

valkas [14]4 years ago

3 0

The answer is 12-gon.

Hope this helps :

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A solution initially contains 200 bacteria. 1. Assuming the number y increases at a rate proportional to the number present, wri

GuDViN [60]

Answer:

1. $\frac{dy}{dt}=ky$

2.543.6

Step-by-step explanation:

We are given that

y(0)=200

Let y be the number of bacteria at any time

$\frac{dy}{dt}$ =Number of bacteria per unit time

$\frac{dy}{dt}\proportional y$

$\frac{dy}{dt}=ky$

Where k=Proportionality constant

2. $\frac{dy}{y}=kdt$ ,y'(0)=100

Integrating on both sides then, we get

$lny=kt+C$

We have y(0)=200

Substitute the values then , we get

$ln 200=k(0)+C$

$C=ln 200$

Substitute the value of C then we get

$ln y=kt+ln 200$

$ln y-ln200=kt$

$ln\frac{y}{200}=kt$

$\frac{y}{200}=e^{kt}$

$y=200e^{kt}$

Differentiate w.r.t

$y'=200ke^{kt}$

Substitute the given condition then, we get

$100=200ke^{0}=200 \;because \;e^0=1$

$k=\frac{100}{200}=\frac{1}{2}$

$y=200e^{\frac{t}{2}}$

Substitute t=2

Then, we get $y=200e^{\frac{2}{2}}=200e$

$y=200(2.718)=543.6=543.6$

e=2.718

Hence, the number of bacteria after 2 hours=543.6

4 0

4 years ago

2. What is the width of this ornament if the volume is 2,226.09 cm^3?

finlep [7]

Answer:

C. 20.10

Step-by-step explanation:

V=4/3r^3

5 0

3 years ago

A number is equal to 3 times a smaller number. Also, the sum of the smaller number and 4 is the larger number. The situation is

alisha [4.7K]

Answer: two equations represent the situation are

y = 3x and y = x + 4

Step-by-step explanation:

The smaller number was represented by x and its values on the x coordinate.

The larger number was represented by y and its values on the y coordinate.

The larger number is equal to 3 times a smaller number. This means that

y = 3x

Also, the sum of the smaller number and 4 is the larger number. This means that

y = x + 4

4 0

3 years ago

Read 2 more answers

45 + 45 +45 +45+ 45+ 45 +45 +45 +45 + 45+ 45=

Brilliant_brown [7]

Answer:

495

Step-by-step explanation:

45×10=450

450+45=495

8 0

3 years ago

Read 2 more answers

PLEASE HELPPPPP!!!!!

kozerog [31]

It is B lol good luck

5 0

3 years ago