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jasenka [17]
3 years ago
6

If any two rows of matrix are equal the determinent of the matrix is

Mathematics
1 answer:
dimaraw [331]3 years ago
4 0

Answer:

Then the determinant is 0.

Step-by-step explanation:

Determinant  of ( 1  2 )      =   1*2 - 2*1   = 0

                          ( 1  2 )

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Slope:  1/4

Step-by-step explanation:

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3 years ago
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8 0
3 years ago
Which values of P and Q result in an equation with no solutions?
Ad libitum [116K]

Try this solution/explanation:

<u>way 1</u>:

rule: for an equation where no roots P+Q=0. It means, Px-Qx=0, ⇔ x(P-Q)=0, ⇔ P=Q.

for answer 'D' P=Q=15.

<u>way 2</u>:

rule: if an equation of the line has a form y=kx+b, then y₁||y₂ if k₁=k₂. It means, for y₁=Px-45 || y₂=Qx+75, then P=Q. P=Q, if 'D' answer.

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3 0
3 years ago
Help me for all these
ad-work [718]
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Don't know why you needed help with this but ok.
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3 years ago
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