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3 years ago

Can anyone please invite me into admitme me please? 50 points

Mathematics

2 answers:

Serga [27]3 years ago

6 0

Try get some free codes or coupons?

olasank [31]3 years ago

3 0

Answer:

I know how you can get an invitation.

Step-by-step explanation:

Try watching videos! See if there are any live streams, keep checking until you find free invite giveaways or something of the sort. Hope this helps! :)

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If y=e5t is a solution to the differential equation

a_sh-v [17]

Answer:

k = 30, $y(t) = C_1e^{5t}+C_2e^{6t}$

Step-by-step explanation:

Since $y=e^{5t}$ is a solution, then it must satisfy the differential equation. So, we calculate the derivatives and replace the value in the equation. We have that

$\frac{d^2y}{dt^2} = 25 e^{5t},\frac{dy}{dt} = 5e^{5t}$

Then, replacing the derivatives in the equation we have:

$25e^{5t}-11(5)e^{5t}+ke^{5t}=0 e^{5t}(25-55+k) =0$

Since $e^{5t}$ is a positive function, we have that

$25-55+k = 0 \rightarrow k = 30$ .

Now, consider a general solution $y(t) = Ae^{rt}, A \in \mathbb{R}$ , then, by calculating the derivatives and replacing them in the equation, we get

$Ae^{rt}(r^2-11r+30)=0$

We already know that r=5 is a solution of the equation, then we can divide the polynomial by the factor (r-5) to the get the other solution. If we do so, we get that (r-6)=0. So the other solution is r=6.

Therefore, the general solution is

$y(t) = C_1e^{5t}+C_2e^{6t}$

8 0

3 years ago

2x+2y = 5<br> 3x + 3y = 7<br> How many solutions does the system of equations above have?

Anastaziya [24]

Answer:

No solutions

Step-by-step explanation:

5 0

2 years ago

Simplify and factor if necessary

Dima020 [189]

Answer:

$\frac{1}{x}$

Step-by-step explanation:

$\frac{3x - 12}{3x^{2} - 12x}$

$\frac{3x - 12}{x(3x-12)}$ Factor out x.

$\frac{1}{x}$ Simplify.

4 0

2 years ago

5 increased by t operation and algebraic expressions

zubka84 [21]

increased means addition

so 5+t

5 0

3 years ago

Please find the measure of the exterior angle

makvit [3.9K]

Answer:

exterior angles:

144°and 36°

126° and 54°

90° and 90°

Step-by-step explanation:

we know that each angle in a triangle adds up to 180°.

so,

2x+3x+5x=180

10x=180

x=180/10

x=18

the interior angles are:

2x=36°

3x=54°

5x=90°

and explanation is provided to find the exterior angles above.(sorry for the bad handwriting)

6 0

3 years ago