Simplyfy 18x5y5+2x5y

Mathematics

1 answer:

marshall27 [118]3 years ago

8 0

Answer:

more than 3 I think

Step-by-step explanation:

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Pls help me

rjkz [21]

Answer:

the MAD to this set is 6.75

Step-by-step explanation:

The process is pretty long on how to find the MAD but here it goes.First you find the mean of the set( 70 )then you find the distances between all the numbers and the mean( 68 is 2 values away from being 70 so that would be 2) than you add all the distances together than divide that number by the amount of values are in the set.

hope that makes sense have a good day

5 0

3 years ago

Express 2 1/3 + 3 1/6

Nutka1998 [239]

2 1/3+3 1/6=5 1/2.......

7 0

4 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

4 years ago

HELPPP PLEASE!!!<br> What is the interior angle sum of a shape that has 45 sides?

ANTONII [103]

15840 degrees

Hope this helps!

7 0

3 years ago

Miguel drove 737 miles in 11 hours.

Dmitriy789 [7]

7 hours , to find the amount of miles in one hour you do 737 divided by 11. Then you take that (67) and divide it by 469

4 0

3 years ago