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3 years ago

999999999999999*22222222222222

Mathematics

2 answers:

k0ka [10]3 years ago

6 0

Answer:

22222222222221977777777777778

Step-by-step explanation:

I hope it is clear for you. please rate brainliest

Pachacha [2.7K]3 years ago

4 0

Answer: 2.22222222E+28

Step-by-step explanation:

please click thanks and mark brainliest if you like :)

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Any help? Please!!!<br><br> It's due today.

tangare [24]

Answer:

120

Step-by-step explanation:

4+4=8 tell you het to 120

5 0

3 years ago

-x=-y+2 and 3y+4=2x solve using matrices

MissTica

$\begin{cases}-x=-y+2\\3y+4=2x\end{cases}\implies\begin{cases}x-y=-2\\2x-3y=4\end{cases}$

In matrix form, this is

$\begin{bmatrix}1&-1\\2&-3\end{bmatrix}\begin{bmatrix}x\\y\end{bmatrix}=\begin{bmatrix}-2\\4\end{bmatrix}$

The coefficient matrix has determinant

$\begin{vmatrix}1&-1\\2&-3\end{vmatrix}=-3+2=-1\neq0$

so it has an inverse, which is

$\begin{bmatrix}1&-1\\2&-3\end{bmatrix}^{-1}=\begin{bmatrix}3&-1\\2&-1\end{bmatrix}$

Multiply both sides by the inverse matrix:

$\begin{bmatrix}3&-1\\2&-1\end{bmatrix}\begin{bmatrix}1&-1\\2&-3\end{bmatrix}\begin{bmatrix}x\\y\end{bmatrix}=\begin{bmatrix}3&-1\\2&-1\end{bmatrix}\begin{bmatrix}-2\\4\end{bmatrix}$

$\implies\begin{bmatrix}x\\y\end{bmatrix}=\begin{bmatrix}-10\\-8\end{bmatrix}$

so that $x=-10$ and $y=-8$ .

8 0

3 years ago

Answer the question below

Lena [83]

To find surface area, you would find the area of each side of the shape. Since this is a cube, each side is a square. So area=side2, So each side is 9, so 9x9=81 for each face. There are 6 faces to a cube, so 6x81=486 in2 is your answer

4 0

3 years ago

Hey what's <br><img src="https://tex.z-dn.net/?f=%281%20%2B%202%29%20%7B%7D%5E%7B2%7D%20" id="TexFormula1" title="(1 + 2) {}^{2}

Tju [1.3M]

Answer:

Step-by-step explanation:

(1+2)²

(3)²

<h2>hope this helps</h2>

6 0

2 years ago

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