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Mila [183]
3 years ago
10

The Pythagorean theorem, a² + b2 = c?, for c

Mathematics
1 answer:
nataly862011 [7]3 years ago
5 0
This is the theorem for you

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Write the equation of a line that is perpendicular to the line y= - 1/3x +8 and passes through the point (0,-4)
pantera1 [17]
The answer would be y = 3x-4
8 0
3 years ago
What is the quadratic regression equation for the data set? ​ ​ ​ <br><br> PLEASEE HELP ME
Soloha48 [4]
You're trying to find constants a_0,a_1,a_2 such that \hat y=a_0+a_1\hat x+a_2{\hat x}^2. Equivalently, you're looking for the least-square solution to the following matrix equation.


\underbrace{\begin{bmatrix}1&6&6^2\\1&3&3^2\\\vdots&\vdots&\vdots\\1&9&9^2\end{bmatrix}}_{\mathbf A}\underbrace{\begin{bmatrix}a_0\\a_1\\a_2\end{bmatrix}}_{\mathbf x}=\underbrace{\begin{bmatrix}100\\110\\\vdots\\70\end{bmatrix}}_{\mathbf b}

To solve \mathbf{Ax}=\mathbf b, multiply both sides by the transpose of \mathbf A, which introduces an invertible square matrix on the LHS.

\mathbf{Ax}=\mathbf b\implies\mathbf A^\top\mathbf{Ax}=\mathbf A^\top\mathbf b\implies\mathbf x=(\mathbf A^\top\mathbf A)^{-1}\mathbf A^\top\mathbf b

Computing this, you'd find that

\mathbf x=\begin{bmatrix}a_0\\a_1\\a_2\end{bmatrix}\approx\begin{bmatrix}121.119\\-3.786\\-0.175\end{bmatrix}

which means the first choice is correct.
8 0
3 years ago
I need help please...
Doss [256]

Answer:

No is your answer

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Solve for X: -22=-7+3/5x
stira [4]



solution for the problem-

X=-22
3 0
3 years ago
PLEASE SOMEONE HELP!!!!!!!!!!!!!
Y_Kistochka [10]

Answer:

32

Step-by-step explanation:

Substitute p=-2 into the equation and solve.

2|6+p|-3p^3\\2|6+(-2)|-3(-2)^3\\2|4|-3(-8)\\2*4-3(-8)\\8+24\\32

3 0
3 years ago
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