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4 years ago

7s paisa 2002

Mathematics

1 answer:

andreyandreev [35.5K]4 years ago

4 0

Answer:

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5 1/2 ft equals how many inches

enot [183]

5 1/2 ft equals 66 inches

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3 years ago

Read 2 more answers

A and B are n×n matrices. Check the true statements below: A. (detA)(detB)=detAB. B. The determinant of A is the product of the

Rudik [331]

Answer with Step-by-step explanation:

We are given that

A and B are matrix.

A.We know that for two square matrix A and B

Then, $det(AB)=det(A)\cdot det(B)$

Therefore, it is true.

B. det A is the product of diagonal entries in A.

It is not true for all matrix.It is true for upper triangular matrix.

Hence, it is false.

C. $\lambda+5=0$

$\lambda=-5$

When is a factor of the characteristics polynomial of A then -5 is an eigenvalue of A not 5.

Hence, it is false.

D.An elementary row operation on A does not change the determinant.

It is true because when an elementary operation applied then the value of matrix A does not change.

8 0

3 years ago

I will give brainliest to people who answer ALL 5 questions.

amid [387]

Here ya go. Hope this helps. Have a great day

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3 years ago

If DE≅EF, CD = v + 45, and CF = 4v, what is the value of v?

irinina [24]

Answer:

<h2>since DE≅EF</h2>

CD=CF (cpct)

$v + 45 = 4v \\ 4v - v = 45 \\ 3v = 45 \\ v = \frac{45}{3} \\ v = 15$

<h2>hope it helps you<3</h2>

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3 years ago

Find the slope of each line

yuradex [85]

The slope is -2. this is because if you look at the graph it goes down 2 units and it goes right to the once so it’ll be -2/1 which equals -2.

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3 years ago