(2x + y - 3z = -9 | x + 5z = 14 | −3x + 2y - z = 4). From 3 (three) equations, what is the value of the determinant z: Select one: O a. 40 O b.-80 O C. -120 O d. -40

Q: Put the equation y = x² + 8x +7 into the form y = (x - h)²+k:

A:

Q: Which equation represents OB? y -2 6. +2 4. 4+

A:

Q: Simplify: 10y - 40 49 - y² 10y² - 70y 10y² + 30y - 280

A: The given expression is:10y-4049-y2·10y2-70y10y2+30y-280

Q: x + 3y = 5 3x - 2y = -18 x=? y=?

A: We will use the substitution method to solve the given linear equation. First, we isolate one of the…

Q: Simplify : (y-1 - (y + 2)-1) / 2

A:

Q: -4d - 3 = 2d +33

A: This problem belongs to the equalities part. We will have to find out the value of d for the given…

Q: Put the equation y = x² + 8x + 7 into the form y = (x – h)² + k: Answer: y =

A: Given,y= x2+8x+7y=x2+8x +16-7y=(x+4)2 -7

Q: -3x -2y - 5z = -29           -y + 5z = 5                   Z = 2

A: Given equations: -3x -2y - 5z = -29                                            …1-y + 5z = 5…

Q: y = -x³ + 9x² - 3 concave upward concave downward Submit Answer x0

A:

Q: Put the equation y = x² - 10x + 21 into the form y = (x - h)²+k:

A:

Q: Put the equation y = x + 18x + 77 into the form y = (x – h)² + k: %3D Answer: y =

A: Please refer the attached image for complete solution. THANK YOU.

Q: -10x+4y=-18 y=x

A: To solve the following system of equations. -10x+4y=-18y=x

Q: then A(-2u - 20) = -2 ---B 5 and Au 3 Au = 2 4

A:

Q: Simplify this equation: (6y2-7y+1)-(3y2-7y+6)

A: Given information:The given expression is

Q: -2 (x - 8) + 4x = -12

A: Answer is-  -14.

Q: 2. Find the values of the variables: x+ 2 y x +1

A:

Q: 3y2 = 4y + 4 y =

A: We will find the required  value for y.