2 years ago

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Mathematics

2 answers:

barxatty [35]2 years ago

4 0

7,680 cubic inches ;) Hope this helps!

Serga [27]2 years ago

4 0

7680!! hope this helps you. good luck

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@dany1115 DONT BE GIVING OUT SOME WRONG ANSWERS BUNK BOY

Westkost [7]

If someone is giving out wrong answers then simply report the answer given to you or make a comment to the answer he gave you telling him to work out the question more thoroughly before publishing it.

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3 years ago

Read 2 more answers

Find a 2 × 2 matrix b ≠ o and b ≠ i2 such that ab = ba, where a = 1 7 0 1 . b =

riadik2000 [5.3K]

If $\mathbf A$ is invertible, then we can simply choose $\mathbf B=\mathbf A^{-1}$ because for any invertible matrix $\mathbf X$ by definition we must have $\mathbf{XX}^{-1}=\mathbf X^{-1}\mathbf X=\mathbf I$ .

We have $\det\mathbf A\neq0$ , as

$\det\mathbf A=\begin{vmatrix}1&7\\0&1\end{vmatrix}=1\times1-0\times7=1$

which means $\mathbf A$ is non-singular and has an inverse. The inverse itself would be

$\mathbf A^{-1}=\dfrac1{\det\mathbf A}\begin{bmatrix}1&0\\-7&1\end{bmatrix}^\top=\begin{bmatrix}1&-7\\0&1\end{bmatrix}$

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4 years ago

Can someone help me please

Yuliya22 [10]

Answer:

Step-by-step explanation:

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3 years ago

Help me pleaseeee I need it

Marta_Voda [28]

4(2x5 + 3) - 4(2) + 2(5).

4(13) - 18.

52-18 = 34.

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