All categories

3 years ago

If any two rows of matrix are equal the determinent of the matrix is

Mathematics

1 answer:

dimaraw [331]3 years ago

4 0

Answer:

Then the determinant is 0.

Step-by-step explanation:

Determinant of ( 1 2 ) = 1*2 - 2*1 = 0

( 1 2 )

You might be interested in

1/7 of all students achieved great success in the written exercise in mathematics. 3/7 very good success. 2/7 good success, whil

laila [671]

Answer:

x = 28

Step-by-step explanation:

Let the total number of students = x

x/7 + 3x/7 + 2x/7 + 4 = x If that is all there is. If it isn't the problem can't be done. Combine like terms.

x(1 + 3 + 2)/7 + 4 = x

x (6/7) + 4 = x Subtract 6x/7 from both sides

4 = x - 6x/7

4 = 7x/7 - 6x/7 Combine

4 = 1/7x Multiply both sides by 7

4*7 = 7x / 7

x = 28

6 0

2 years ago

Pls pls help, thank you <3

Reika [66]

Answer:

(x -1)² +(y -4)² = 25

Step-by-step explanation:

The equation of a circle in standard form is ...

(x -h)² +(y -k)² = r² . . . . . . . circle with center (h, k) and radius r

The graph shows your circle has its center at (1, 4) and its radius is 5. Then the equation is ...

(x -1)² +(y -4)² = 25

3 0

3 years ago

A ball rolls down an inclined plane such that the distance (in centimeters) that it rolls in t seconds is given by s(t) = 2t^3 +

IRISSAK [1]

The ball's velocity will be represented by the derivative of its distance function:

$s'(t)=6t^2+6t$

Now find the times $t$ for which this is equal to 30, i.e. solve

$6t^2+6t=30\implies t^2+t-5=0$

This has two solutions, $t=-\dfrac{1\pm\sqrt{21}}2$ , but only one is positive and falls in the interval $[0,3]$ . So the velocity reaches 30 cm/s when $t=-\dfrac{1-\sqrt{21}}2\approx1.79$ .

3 0

3 years ago

So sorry but can you answer this question gonna pull my hair out

Dmitriy789 [7]

4 × 1 × 3 = 12
2 × 1 × 3 = 6
12 + 6 = 18 cubic ft

6 0

3 years ago

Select the correct graph of −4x + 3y = 6.

frosja888 [35]

Do you have a picture of the graph? They formula put into y=mx+b is y=4/3+2

so the y intercept is 2 and the slope will be going upwards :)

6 0

3 years ago

Read 2 more answers