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3 years ago

67✖️85 and estimate plz help

Mathematics

2 answers:

djverab [1.8K]3 years ago

6 0

5695.

I would round like this 70 times 90 and I would get 6300!

Artist 52 [7]3 years ago

4 0

SO to estimate you wanna round so round 67 to 70 because its closer to 70 than 60 and round 85 to 90 because its closer to 90 and the mulitply and you should get 5400
HOPED THAT HELPED

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Elden [556K]

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Step-by-step explanation:

If you have two matrices:

$A=\left[\begin{array}{cc}a&b\\c&d\end{array}\right]\\and\\B=\left[\begin{array}{cc}e&f\\g&h\end{array}\right]\\\\\\A+B=\left[\begin{array}{cc}a+e&b+f\\c+g&d+h\end{array}\right]$

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$A=\left[\begin{array}{cc}6&-3\\10&-1\end{array}\right]\\and\\B=\left[\begin{array}{cc}-2&8\\3&-12\end{array}\right]$

And we need to express as a single matrix:

$A+B=\left[\begin{array}{cc}6&-3\\10&-1\end{array}\right]+\left[\begin{array}{cc}-2&8\\3&-12\end{array}\right]\\\\\\A+B=\left[\begin{array}{cc}6+(-2)&-3+8\\10+3&-1+(-12)\end{array}\right]\\\\\\A+B=\left[\begin{array}{cc}6-2&5\\13&-1-12\end{array}\right]\\\\\\A+B=\left[\begin{array}{cc}4&5\\13&-13\end{array}\right]$

The answer is:

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It is expressed as a single matrix.

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