Plsss help!!!!!!!!!!!!!!!

Mathematics

2 answers:

sesenic [268]3 years ago

8 0

Answer:

It is not a statistical question

Ilia_Sergeevich [38]3 years ago

3 0

Answer:

Step-by-step explanation:

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Resolve into factors: 81a3 + 3b3

iren [92.7K]

Answer: (3a+b)⋅(9a 2 −3ab+b2 )

Step-by-step explanation:

8 0

3 years ago

Find the value of kk for which the constant function x(t)=kx(t)=k is a solution of the differential equation 5t3dxdt+2x−2=05t3dx

uranmaximum [27]

Given the differential equation

$5t^3 \frac{dx}{dt} +2x-2=0$

The solution is as follows:

$5t^3 \frac{dx}{dt} +2x-2=0 \\ \\ \Rightarrow5t^3 \frac{dx}{dt} =2-2x \\ \\ \Rightarrow \frac{5}{2-2x} dx= \frac{1}{t^3} dt \\ \\ \Rightarrow \int {\frac{5}{2-2x} } \, dx = \int {\frac{1}{t^3}} \, dt \\ \\ \Rightarrow- \frac{5}{2} \ln(2-2x)=- \frac{1}{2t^2} +A \\ \\ \Rightarrow\ln(2-2x)= \frac{1}{5t^2} +B\\ \\ \Rightarrow2-2x=Ce^{\frac{1}{5t^2}} \\ \\ \Rightarrow 2x=Ce^{\frac{1}{5t^2}}+2 \\ \\ \Rightarrow x=De^{\frac{1}{5t^2}}+1$

3 0

3 years ago

The value of -7 + 24 ÷ (-3)(2) is _____.<br><br> Show work

densk [106]

Answer:

$\boxed{=-23}$

Explanation: You had to used pemdas stands for: p-parenthesis, e-exponents, m-multiply, d-divide, a-add, and s-subtracting that came from left to right.

First you had to multiply and divide from left to right.

$24/(-3)=-8(2)$