BRAINIEST TO CORRECT ANSWER (2x^2 +7x)+ (−x^2+10x+3)
1 answer:
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Answer:
Option B R(2,4) is correct
Step-by-step explanation:
The equation of the circle is:
Where r = radius
a and b are coordinates of the center of circle.
To check which point lies on a circle, we need to verify the equation
We will check for each option.
Option A Q(1,11)
x=1 and y =11
So, Option A is incorrect
Option B R(2,4)
x =2 and y = 4
Option B is correct.
Option C S(4,-4)
x =4 and y =-4
Option C is incorrect
Option D T(9,-2)
x =9 and y =-2
Option D is incorrect.
Answer:
x = -5; y = 4, z = 1
Step-by-step explanation:
Given the row echelon form as:
This matrix can be represented as:
Therefore:
z = 1
y - z = 3;
y = 3 + z = 3 + 1 = 4.
Hence, y = 4
x + 4z = - 1;
x = -1 - 4z = -1 - 4(1) = -5
x = -5
