3 years ago

Need Heeeeeelp please ...

Mathematics

1 answer:

natita [175]3 years ago

6 0

the answer is red of all

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Megan and molly have an age gap of 6 years. Megan is older. If molly is 8 years old, then how old is Megan?

Maurinko [17]

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Step-by-step explanation:

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4 years ago

Find the inverse of the matrix , if it exists

Montano1993 [528]

Answer:

So, option A is correct.

Step-by-step explanation:

To find the inverse of the matrix, the formula is:

$A^{-1} = 1/|A| * Adj A$

Inverse of the matrix exists if |A| does not equal to 0

|A| = 7 * 9 -( -2 * -10)

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so inverse exist.

now finding Adj A

$Adj A$ = $\left[\begin{array}{cc}9&2\\10&7\end{array}\right]$

$\left[\begin{array}{cc}9/43&2/43\\10/43&7/43\end{array}\right]$

So, option A is correct.

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3 years ago