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SSSSS [86.1K]
3 years ago
13

It took edwardo 8 hours to drive frombuffalo NY, to New your city, a distance of about 400 miles find his average speed

Mathematics
1 answer:
Kay [80]3 years ago
8 0
His average speed is calculated by dividing 400 to 8. So, 400÷8=50mph.
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Answer:

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4 0
3 years ago
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Andru [333]
Note, since both factors have the same denominator, we can add the numerators together.

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If the value of third order determinant is 11. Then what is the value of the determinant formed by its cofactors.
nordsb [41]

Answer:

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third order determinant = determinant of 3×3 matrix A

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=det(adjacent of A)

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(Using for an n×n det (cofactor matrix of A)=det (A)^n−1 )

we get

det (cofactor matrix of A)^2  = {det(A)  ^3−1 }^2

 

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Hope this helped.
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Step-by-step explanation:

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