The chart shows Daniela’s run through her race.

Mathematics

1 answer:

Nutka1998 [239]3 years ago

8 0

So it would be c the

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If three sides of one triangle are equal to three sides of another triangle, then the triangles are congruent. conjunction disju

Mama L [17]

All statements are conditional since they are the given statements that are considered to be true.

Conjunction and disjunction are not true since... 

→Conjunction: There is no implication of the uses of "and" 
→Disjunction: There is no implication of the uses of "or" 

Good luck!

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4 years ago

What is the quadratic regression equation for the data set? 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.

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Computing this, you'd find that

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which means the first choice is correct.

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4 years ago

Help with question pls I don't understand

Mazyrski [523]

Answer:

15x^3y+6x^2y^2+9xy^3

Step-by-step explanation:

3xy ( 5x^2 +2xy +3y^2)

Distribute the 3xy to all terms in the parentheses

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