3x + 3 = 3y < -- make this 3x - 3y = -3
2x - 6y = 2
multiply by 2 on the first equation
6x - 6y = -6
2x - 6y = 2
subtract them
4x = -8
x = -2
substitute x = -2 into any of the equation
2x - 6y = 2
2(-2) - 6y = 2
-4 - 6y = 2
-6y = 6
y = -1
So the answer is
(-2 , -1)
Answer:
3-2/3
Step-by-step explanation:
Ask yourself how many times does this go into that.
3 goes into 11 evenly 3 times thus leaving 2 left over
Your denominator remains the same.
3-2/3
You can then check your answer 3 x 3 = 9 + 2 = 11
Answer:
Center ( 4 , -2) and r = 6
Step-by-step explanation:
x² - 8x + y² + 4y - 16 = 0
x² - 8x + y² + 4 y = 16
x²- 2*4x + y² + 2 *2y = 16
(x² - 2*4x + 16 ) - 16 + (y² + 2*2y + 4) -4 = 16
(x - 4)² + (y + 2)² = 16 + 16 + 4
(x - 4)² + (y -[-2])² = 36
(x- 4)² + ( y - [-2] )² = 6²
Compare with (x - h)²+ (y - k)² = r²
Center ( 4 , -2) and r = 6
Answer:
9.425
Step-by-step explanation:
first find the total length of a circle with the radius being 2cm
which u will obtain 12.566
not forget that in circle 90 degrees =1/4
so u will find 1/4 of 12.566 which= 3.141
then subtract 3.141 from 12.566
=9.425