Answer:
Step-by-step explanation:
1). x² - 8x
To convert this expression into a perfect square trinomial,
x² - 2(4x) + 4² = (x - 2)²
Therefore , 4² = 16 should be added.
Option (4) is the answer.
2). x² + 2x = 3
x² + 2(1)(x) = 3
x² + 2(1)(x) + 1 = 3 + 1 [By adding 1 on both the sides]
(x + 1)² = 4
x + 1 = ±2
x = -3, -1
Option (1) is the answer.
3). 3x²- 18x = 21
x² - 6x = 7
x² - 2(3x) = 7
x² - 2(3x) + 3² = 7 + 3²
(x - 3)² = 7 + 9
(x - 3)² = 16
x - 3 = ±4
x = -1, 7
Yes, so start by solving for y by subtracting everything else to the opposite side of the = from y.
1. y = 5 - x
2. y = x - 1
Now that we have our two equations in point-slope form, we can create graphs.
Our point-slope form is y = mx + b where m = slope of line and b = y-intercept.
The slope of equation 1. is -1 and the slope of equation 2. is 1
The y-intercept (how much the line goes up or down on the y-axis) for equation 1. is 5 and the y-intercept of equation 2. is -1
The answer is B. <span>the x-intercept represents Adam's total sales when he earned no commission
I took the test :3</span>
Step-by-step explanation:
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Answer:
12x + 6
Step-by-step explanation:
3(4x + 2)
you distribute the 3 to 4x and 2
12x + 6
hope this helps
