How do I solve this problem

Which expression gives the determinant of the matrix

BartSMP [9]

If the matrix is of 2 by 2 then we can find the determinant of the matrix.

$\begin{bmatrix}a & b\\ c & d\end{bmatrix}$

Then (ad - bc ) gives you the determinant of the matrix.

For example,

$\begin{bmatrix} 2 & 4\\ 1 & -2 \end{bmatrix}$

= (2)(-2) - (1)(4)

= - 4 - 4

$\begin{bmatrix} 2 & 4\\ 1 & -2 \end{bmatrix}$ = -8

3 0

4 years ago

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WILL GIVE BRAINLEST!!!!!!!!!!!!!! ANSWER ASAP!!!!!!!!!!!!

Natasha_Volkova [10]

Answer:

Step-by-step explanation:

 Its because 1.5x number of dried × x =? So we determine that its 18 but no otsnot 18, 12 not the point rather its 12,15.

3 0

3 years ago

90 points for question

Lesechka [4]

Answer:

x=10

Step-by-step explanation:

so your given an angle, 110, and another with an equation, 8x+30, which happens to be vertical to 110 degree angle meaning they are equal, so they both are equal to 110 now how do you solve for x? you simply reverse the equation that x is in, so you subtract 110-30=80, then divide by 8 giving you 10, so x=10.

3 0

2 years ago

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What does h equal in the equation S=2πr2+2πrh?

Troyanec [42]

A

Step-by-step explanation:First, subtract

2

π

r

2

from each side of the equation to isolate the

h

term:

S

−

2

π

r

2

=

2

π

r

h

+

2

π

r

2

−

2

π

r

2

S

−

2

π

r

2

=

2

π

r

h

+

0

S

−

2

π

r

2

=

2

π

r

h

Now, divide each side of the equation by

2

π

r

to solve for

h

:

S

−

2

π

r

2

π

r

=

2

π

r

h

2

π

r

S

−

2

π

r

2

π

r

=

2

π

r

h

2

π

r

S

−

2

π

r

2

π

r

=

h

=

S

−

2

π

r

2

π

r

Or

h

=

S

2

π

r

−

2

π

r

2

π

r

h

=

S

2

π

r

−

2

π

r

2

π

r

h

=

S

2

π

r

−

r

2

r

h

=

S

2

π

r

−

r

4 0

4 years ago

The dashed triangle is a dilation image of the solid triangle. What is the scale factor?

WARRIOR [948]

Answer:

1/2

Step-by-step explanation:

Take any point from the original, like (2,2) If the new point is (1,1) then the change would be 1/2

3 0

3 years ago