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Alchen [17]
3 years ago
13

If a= 3 -1 5 and b= 5 3 1

Mathematics
1 answer:
tiny-mole [99]3 years ago
7 0

Answer:

det(A)=-det(B)

Step-by-step explanation:

We have two matrices A, and B.

Matrix B is obtained by swapping rows 1 and 3 of matrix A.

Whenever we swap rows in matrices, the determinants does not change but the sign changes.

Therefore

det(A)=-det(B)

Also no two rows of of both matrices are the same, therefore

det(A)≠0, and det(B)≠0

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one winter day the temperature ranged from a high of 20 f to a low of -25 f. by how many degrees did the temperature change?
Mamont248 [21]

Answer:

45 degrees

Step-by-step explanation:

you would do 20-(-25) then that turns to 20+25 and you get 45

6 0
3 years ago
Simplify the expression so there is only one positive power for the base, -5
s2008m [1.1K]

Answer:

C. -5 power of 5

Step-by-step explanation:

-5 power of 7 / -5 power of 2

Soo, you subtract the exponent 7 by 2 and you are left with 5.

You are thus left with -5 to the power of 5.

Please mark as brainliest if it helped!:)

6 0
3 years ago
Solve: the quantity 2x minus 10 divided by 4 = 3x
AleksAgata [21]

Answer:

x=-2.5

Step-by-step explanation:

2x-10÷4=3x

2x-2.5=3x

-2.5=x

7 0
3 years ago
Read 2 more answers
Principal Leroy Jenkins wants to build a circular garden in the school courtyard. The garden will have a diameter of 20 feet. Pr
Dovator [93]

Answer:

62.8ft

Step-by-step explanation:

we are to determine the circumference of the garden

circumference = πD

= 3.14 x 20 = 62.8 ft

8 0
3 years ago
The inequality of the most people that can be seated in the auditorium
WINSTONCH [101]
Let x be the number of people that can be seated.

The value of x is some number 0 or greater, such that this number is a whole number (we can't have half a person). This means that x \ge 0 which is the same as saying 0 \le x

The instructions state that we can seat up to 1200 people. This is the max capacity. We can't go over this amount. So we will also have x \le 1200 indicating that x can be less than 1200 or equal to 1200.

So putting the two inequalities together, we get 0 \le x \le 1200

Note: if you haven't learned about compound inequalities yet, then the teacher may only want x \le 1200 as the answer.
3 0
3 years ago
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