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vekshin1
2 years ago
13

1 po

Mathematics
1 answer:
Vladimir [108]2 years ago
8 0

lets represent the miles she will go per hour by x

240=×

5=1hour

with cross multiplication,= 240×1hour=5×x

240=5x

divide both sides by 5

240/5=5x/5

48=x

hence x=48

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An n × n matrix B has characteristic polynomial p(λ) = −λ(λ − 3) 3 (λ − 2) 2 (λ + 1). Which of the following statements is false
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Only d) is false.

Step-by-step explanation:

Let p=p(\lambda)=\lambda(\lambda-3)^3 (\lambda-2)^2 (\lambda+1) be the characteristic polynomial of B.

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b) Remember that p(\lambda)=\det(B-\lambda I). 0 is a root of p, so we have that p(0)=\det(B-0 I)=\det B=0.

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d) det(B)=0 by part c) so B is not invertible.

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