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SpyIntel [72]
3 years ago
7

What is the determinant of B? A. −27 B. −30 C. 30 D. –6

Mathematics
2 answers:
Fudgin [204]3 years ago
8 0

Answer:

Step-by-step explanation:

tiny-mole [99]3 years ago
6 0

Answer:

Answer B:  -30

Step-by-step explanation:

Let B be as follows:

[-18 3]

[4    1 ]


To find the determinant, multiply diagonally <em>downward</em> from -18 through 1, obtaining -18.  We keep this sign as is.

Continue:  Start at 4 and move diagonally <em>upward</em> through 3; this product is 12. Because we moved upward, give this result the opposite sign:  -12.

Now add together these two products; that is, add together -18 and -12.  Here the sum is -30.  This is the determinant of the matrix.  It's Answer B.

Finding the determinant of a 3x3 matrix obviously requires more steps, but the general approach is similar.

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Please help right now please
const2013 [10]

Answer:

A or 24

Step-by-step explanation:

In PEMDAS you do the steps from left to right in the name.

So first, you do 3 * x and x = 6 so 3  * 6 which is 18.

then 18 + y and y = 8 so 26

26 minus 2 is 24.

Hope this helped~ ^-^

4 0
2 years ago
What is the height, in yards, of a cylindrical water tank that holds 1,884 cubic yards of water and has a diameter of 120 feet?
mafiozo [28]

Answer:

The height of the tank is 0.5 yards.

Step-by-step explanation:

To determine what is the height, in yards, of a cylindrical water tank that holds 1,884 cubic yards of water and has a diameter of 120 feet, knowing that the volume of a cylinder is equal to pi multiplied by the radius squared, multiplied by the height, the following calculation must be done:

1 foot = 0.3333 yards

R = Diameter / 2

R = 120/2 = 60

3.14 x 60 ^ 2 x H = 1,884

3.14 x 3,600 x H = 1,884

3.14 x 1,200 x H = 1,884

3.768 x H = 1.884

H = 1,884 / 3,768

H = 0.5

Therefore, the height of the tank is 0.5 yards.

7 0
2 years ago
Complete the following statement of congruence:
blagie [28]

Answer:

C

Step-by-step explanation:

congruence means duplicate so you have to see its reflection

4 0
3 years ago
The flag of a country contains an isosceles triangle. (Recall that an isosceles triangle contains two angles with the same measu
sveticcg [70]

Answer:

<1 = 33 degrees

<2 = 33 degrees

<3 = 114 degrees

Step-by-step explanation:

<1 and <2 = x

<3 = 3x+15

<1 + <2 + <3 = 180 degree

x + x + 3x + 15 = 180

5x = 180 - 15

x = 165/5

x = 33

<3 = 3(33)+15

= 114 degrees

8 0
2 years ago
First one to answer, i will mark brainlist
7nadin3 [17]

Answer:

Sides in descending order:  YZ > ZX > XY

Step-by-step explanation:

Sum of all angles of triangle = 180

    104 +52 +  ∠Z = 180

            156 + ∠Z = 180

                      ∠Z = 180 - 156

                      Z = 24

The sides opposite to the biggest is the longest side.

Angles in descending order: ∠X  >  ∠Y >  ∠Z

<h3>Sides in descending order:  YZ > ZX > XY</h3>
5 0
1 year ago
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