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maw [93]
3 years ago
15

PLEASE HELPPP!!! i dont get tge question

Mathematics
1 answer:
alisha [4.7K]3 years ago
3 0

Answer:

it's a substitution because y was solved

Step-by-step explanation:

2x +2(3x-7)=10

you just replace the "y' by the solved y

then you solve parenthesis and continue the rest.

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Find the indicated values, where g(t)=t^2-t and f(x)=1+x f(2g(1)
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Read 2 more answers
Suppose that A = PDP-1 . Prove that det(A) = det(D)
daser333 [38]

Answer:

Check.

Step-by-step explanation:

To prove it we need to know that  for two matrices A and B we have that:

det(AB) = det(A)*det(B) and det(A^{-1}) = \frac{1}{det(A)}. Now:

A = PDP^{-1}

det(A) = det(PDP^{-1})

det(A) = det(P)*det(D)*det(P^{-1})

det(A) = det(P)*det(D)*\frac{1}{det(P)}

det(A) = det(P)*\frac{1}{det(P)}*det(D)

det(A) = det(D).

5 0
3 years ago
I need help asap please
olga55 [171]
8x^2y is correct
Hope this helps
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