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3 years ago

Help with b please I don’t understand it

Mathematics

1 answer:

galben [10]3 years ago

8 0

Answer:

This is a 25% decrease

Step-by-step explanation:

percent change = (old - new)/old * 100 %

The new price is 15

The old price is 20

Since the new price is less than the old price, it is a decrease

percent change = (20-15)/20 * 100 %

= 5/20 * 100%

=.25 * 100%

= 25%

This is a 25% decrease

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Solve the given matrix equation for X. Simplify your answers as much as possible. (In the words of Albert Einstein, "Everything

Sav [38]

Answer:

The solution is $X=A^{-1}(BA)^{2}B^{-1}$ .

Step-by-step explanation:

Given two matrix $A, B$ are invertible, so they are not commutative. That is, $AB\neq BA$ . Now given,

$AXB=(BA)^{2}$

$A^{-1}AXB=A^{-1}(BA)^{2}$

$XB=A^{-1}(BA)^{2}$

$XBB^{-1}=A^{-1}(BA)^{2}B^{-1}$

$X=A^{-1}(BA\times BA)^{2}B^{-1}$

Since invertible matrices are non-commutative, in the next step we cannot write $BA$ as $AB$ . And so the required answer is,

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4 years ago

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Step-by-step explanation:

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3 years ago

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blagie [28]

Answer:

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Step-by-step explanation:

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2 years ago

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Ne4ueva [31]

Substitute

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