Answer:
17
Step-by-step explanation:
-2x^2 + 3x - 9 = 0
The quadratic is not factorable so quadratic formula must be used.
x = (-b + - √(b^2 - 4ac))/2a
a = -2, b = 3, c = -9
x = (-3 + - √(9 - 4*-2*-9))/-4
x = (-3 + - √(-63))/-4
x = -3 + - 3i√7
--------------
-4
x = 3 + 3i√7 x = 3 - 3i√7
------------ ------------
4 4
Answer:
y = -3x - 5
Step-by-step explanation:
-2y = 6x + 10
divide both sides by -2
y = -3x - 5
First isolate
by subtracting 1 from both sides of the equation.
That gives you
.
From here, since x is being divided by 2, multiply both sides of the equation by 2.
So <em>x = 10</em>.
Work is attached in the image below.