Answer:
{1}
Step-by-step explanation:
We find determinant for the given matrix and set it equal to -1
To find determinant we apply formula


|A| = x^2 - 2x
Now we set the determinant = -1

Add 1 on both sides

Now factor it
(x-1)(x-1) = 0
Set each factor =0 and solve for x
x- 1=0 so x=1
Answer:
independent and 3/8
Step-by-step explanation:
independent because you didn't take another one out
6/16 which equals to 3/8
i may be wrong on this one
Answer:
Step-by-step explanation:
I don't say you must have to mark my and as brainliest but if it has really helped you plz don't forget to thank me....
Answer:
A jar contains 5 red, 4 blue, and 3 yellow marbles.
The probability of pulling a red marble, then pulling a blue marble, without replacement would be:
P = 5/(5+4+3) x 4/(5+4+3-1) = 5/12 x 4/11 = 0.15 = ~0.2
Hope this helps!
:)
Answer:
Center: ( -1 , 2 )
Radius: 6
Step-by-step explanation:
The equation for a circle is given as follow:

Where,
the Center is: ( h , k ) (note that the signs of the number are different)
and the radius is: r
So if we compare the original circle equation to the equation in the question we can see that:

the Center is: (-1,2)
and the radius is:
= 6
2. To draw the graph find points that lay on the circle, it's better to take the values of x and y from the Center:
first sub y=2 in the equation to find the values for x:





AND 
AND 
- The points are A(5,2) and B(-7,2)
second sub x= -1 in the equation to find the values for y:





AND 
AND 
- The points are D(-1,8) and E(-1,-4)
After finding the points write them in the graph and match them together to get the like the circle in the picture below: