Solve the system of equations.
2x + 4y + 3z= 6
5x + 8y + 6z = 4
4x + 5y + 2z = 6
a. (x = -7, y = 9,2 =-7)
b. (x = -8, y = 10,2=-6)
c. (x=-9, y = 11, z = -5)
d. (x = -6, y = 8, z = -4)

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)

Which linear inequality is represented by the graph?