Answer:
C.
Step-by-step explanation:
Because there is constant term 4 in the question, but there is no any such constant term in the given options.
Answer:
Can you reformat?
So far, 0 is a solution to none of these.
Answer:
6
Step-by-step explanation:
2/3x=4
x=4/(2/3)
x=(4/1)(3/2)
x=12/2
x=6
Answer:
Below in bold.
Step-by-step explanation:
10x² + 3x -2 = -1
10x^2 + 3x - 1 = 0 Taking 10 out from the first 2 terms:-
10(x^2 + 0.3) - 1 = 0 Completing the square:
10[(x + 0.15)^2 - 0.15^2] - 1 = 0
10[(x + 0.15)^2 - 0.0225] - 1 = 0
10(x + 0.15)^2 - 0.225 - 1 = 0
10(x + 0.15)^2 - 1.225 = 0 is vertex form.
The vertex (turning point is at (-0.15, -1.225).
y- intercept is at the point where x = 0,
- that is at y = 10(0.15)^2 - 1.225 = -1
So at (0, -1).
Solving for x:
10(x + 0.15)^2 - 1.225 = 0
(x + 0.15)^2 = 0.1225
x + 0.15 = +/- sqrt 0.1225
x = -0.15 +/- sqrt 0.1225
The roots are -0.5, 0.2
So long as you remember that distances are always zero or positive, the order in which you subtract one x-coordinate from another does not matter.
Example: |A-B| = |B-A|.
Communication of this situation is clearer, however, if you write algebraically larger x-coordinate first and the subtrahend second.