3 years ago

Which is the graph of f(x) =

Mathematics

1 answer:

rosijanka [135]3 years ago

6 0

The answer would be the first 1.

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Show that if A is invertible, then det Upper A Superscript negative 1det A−1equals=StartFraction 1 Over det Upper A EndFraction

netineya [11]

Answer:

Therefore

$det(A)*det(A^{-1}) = 1$ and $det(A^{-1}) = 1/det(A)$

Step-by-step explanation:

Remember that if

$I$ = Identity Matrix

then $det(I)=1$ .

Also remember that for any invertible matrix

$A*A^{-1} = I =$ Identity Matrix.

Therefore

$det(A*A^{-1}) = det(A)*det(A^{-1}) = det(I) = 1$

Therefore

$det(A)*det(A^{-1}) = 1$ and $det(A^{-1}) = 1/det(A)$

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3 years ago

Can the sides of a triangle have lengths 1, 3, and 10?

Troyanec [42]

Answer:

yes the sides of a triangle can have all those sides

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3 years ago

A bicycle was originally sold for $400 was on sale for $320. what percent was the bike marked down?

Eva8 [605]

100% of the price = $400
x % of the price = $320
we need to find x

using a proportion
100 : 400 = x : 320
100 * 320 = 400 * x
32000 = 400x
x = 32000 / 400
x = 80

That means the new price is 80% of the previous price.
100% - 80% = 20%
and based on this we can make a conclusion that the discount was 20%

I hope it is clear to you, feel free to ask anything about it :)

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3 years ago

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Helpppppppppppppppppppppppppp

nikklg [1K]

Answer:

Step-by-step explanation:

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3 years ago

If you don't know, please don't answer.

weeeeeb [17]