2 years ago

Formula for finding perimeter/circumference of major sector plz no links in a hurry

Mathematics

1 answer:

Rainbow [258]2 years ago

3 0

Answer:

C = 2πr or C = πd

Step-by-step explanation:

Hope this helps :)

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Given g(x) = -x + 5, solve for x when g(x) = 3.

Elan Coil [88]

Both equal g(x) so put them together

-x+5=3 then solve for x

-x=3-5
-x=-2
-2 divided by -x =2

x=2

5 0

3 years ago

Find the solution of the differential equation dy/dt = ky, k a constant, that satisfies the given conditions. y(0) = 50, y(5) =

irga5000 [103]

Answer: The required solution is $y=50e^{0.1386t}.$

Step-by-step explanation:

We are given to solve the following differential equation :

$\dfrac{dy}{dt}=ky~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)$

where k is a constant and the equation satisfies the conditions y(0) = 50, y(5) = 100.

From equation (i), we have

$\dfrac{dy}{y}=kdt.$

Integrating both sides, we get

$\int\dfrac{dy}{y}=\int kdt\\\\\Rightarrow \log y=kt+c~~~~~~[\textup{c is a constant of integration}]\\\\\Rightarrow y=e^{kt+c}\\\\\Rightarrow y=ae^{kt}~~~~[\textup{where }a=e^c\textup{ is another constant}]$

Also, the conditions are

$y(0)=50\\\\\Rightarrow ae^0=50\\\\\Rightarrow a=50$

and

$y(5)=100\\\\\Rightarrow 50e^{5k}=100\\\\\Rightarrow e^{5k}=2\\\\\Rightarrow 5k=\log_e2\\\\\Rightarrow 5k=0.6931\\\\\Rightarrow k=0.1386.$

Thus, the required solution is $y=50e^{0.1386t}.$

8 0

2 years ago

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Identify the index in the radical below. A. 1 B. 2 C. 3 D. 4

marysya [2.9K]

Answer:

It is four/4 I believe D.4

Step-by-step explanation:

3 0

2 years ago

I need help.. PLEASE HELP ME WITH SOME QUESTIONS I HAVE ON ALGEBRA

alukav5142 [94]

Okay post them 1 at a time

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2 years ago

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Find f(7). f(x)=x^2+9 Find b(-2)-a(12). a(x)=13x-2;b(x)=8x-14

baherus [9]

Answer:

f(7)=58

b(-2)-a(12)=-188

Step-by-step explanation:

f(7)=(7)^2+9

49+9

f(7)= 58

b(-2)-a(12)=8(-2)-14-13(12)-2

-16-14-156-2

=-188

4 0

3 years ago

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