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3 years ago

! ! ! Angles ! ! !

Mathematics

2 answers:

Stells [14]3 years ago

8 0

Answer:

its a

Step-by-step explanation:

tankabanditka [31]3 years ago

7 0

Answer:

I think it is a

Step-by-step explanation:

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Sorry, but I also need help on this

gladu [14]

Answer:

It B ok

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Given f(x) = (3x – 12) +2, what is the domain in set notation?

sattari [20]

Answer:4

Step-by-step explanation:

6 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

3 years ago

Read 2 more answers

Who could help me please:)))I'll apreciate the answers:))))

Wittaler [7]

The answer in order is b a c

6 0

3 years ago

How do you use distributive property for 12(52)-12(62)

ololo11 [35]

Answer:

-120 , split it into diferent parts.

Step-by-step explanation:

12 (52) - 12 (62) = ?

12 x 52 = 624

12 x 62 = 744

624 - 744 = -120

3 0

3 years ago