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3 years ago

PLEASE HELP ME WITH THIS FAST PLEASE!!! I even gave you something to help, and you’ll receive 100points

Mathematics

1 answer:

erastovalidia [21]3 years ago

4 0

Answer:

Why did you add so many? 2,4, 5, 2 , 5, 5, 7, 8, 9, 1, 3, 5, 6, 2, 7,

Message me if you need my to clarify

Step-by-step explanation:

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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

Use compatible numbers to estimate the quotient 5,514÷82

Sphinxa [80]

The answer is 67 because 67 x 82 is 5,494 which us close to 5,514

5 0

3 years ago

Read 2 more answers

YES!!!!!!!!!!! SCHOOL IS OVER<br><br>Answer with: WHOOOOOOOOOOOOOOOHOOOOOOO

lesya692 [45]

Whoooooooooooooooohooooooooo

4 0

2 years ago

Read 2 more answers

The longer leg of a right triangle is 6cm longer than the shorter leg and also 1cm longer than the hyptenese. find the perimeter

CaHeK987 [17]

X - a leg (x > 6);
x - 6 - a leg;
x + 1 - a <span>hypotenuse;</span>
Use the Pythagorean theorem
$(x+1)^2=x^2+(x-6)^2$

Use: $(a\pm b)^2=a^2\pm2ab+b^2$

$x^2+2x+1=x^2+x^2-12x+36\ \ \ |-x^2-2x-1\\\\x^2-14x+35=0\ \ \ |-35\\\\x^2-14x=-35\\\\x^2-2\cdot x\cdot7=-35\ \ \ |+7^2\\\\x^2-2\cdot x\cdot7+7^2=-35+7^2\\\\(x-7)^2=14\iff x-7=\pm\sqrt{14}\ \ \ |+7\\\\x=7-\sqrt{14} < 6;\ x=7+\sqrt{14}$

$x=7+\sqrt{14}\\x-6=1+\sqrt{14}\\x+1=8+\sqrt{14}$

The perimeter:

$7+\sqrt{14}+1+\sqrt{14}+8+\sqrt{14}=16+3\sqrt{14}$

5 0

3 years ago

What is the percent of decrease from 100 to 38?

Ipatiy [6.2K]

Answer: 62

Step-by-step explanation:

100 - x = 38

x =62

7 0

2 years ago