3 years ago

What is the least common multiple 8 and 12?

Mathematics

2 answers:

Andreyy893 years ago

7 0

Answer:24

Step-by-step explanation:

There least common multiple of 8 and 12 is 24

Anna35 [415]3 years ago

5 0

Answer:

Step-by-step explanation:

8 x 3 = 24

12 x 2 = 24

so 24 is your least common multiple

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3 years ago

If a2 = i, where i is the identity matrix, which matrix correctly represents matrix a?

sergey [27]

$A=\left[\begin{array}{ccc}3&-2\\4&-3\end{array}\right]$

We can find the A as shown below:

Given A^2=I

We know that A^2=A×A

And $I=\left[\begin{array}{ccc}1&0\\0&1\end{array}\right]$

So, $A^2=\left[\begin{array}{ccc}1&0\\0&1\end{array}\right]$

Let $A=\left[\begin{array}{ccc}3&-2\\4&-3\end{array}\right]$

$A^2=\left[\begin{array}{ccc}3&-2\\4&-3\end{array}\right] \left[\begin{array}{ccc}3&-2\\4&-3\end{array}\right]$

$A^2=\left[\begin{array}{ccc}9-8&-6+6\\12-12&-8+9\end{array}\right]$

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Hence, $A=\left[\begin{array}{ccc}3&-2\\4&-3\end{array}\right]$

Hence, option C is correct

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Disclaimer: Given question is incomplete. Complete question is attached.

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A) 5/10 = (5/10)*(10/10) = 50/100

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