4(3x + 2) - 9 = 8x + 7
4(3x) + 4(2) - 9 = 8x + 7
12x + 8 - 9 = 8x + 7
12x - 1 = 8x + 7
<u>- 8x - 8x </u>
4x - 1 = 7
<u> + 1 + 1</u>
<u>4x</u> = <u>8</u>
4 4
x = 2
The property that justifies Emily's first step is the addition property of equality (2).
It would be 2x-20. Explanation: for inverse’s, you flip the y and the x and then solve for y to get your inverse. So, the equation would look something like
X = 1/2 y +10
I would then subtract 10 from both sides
X - 10 = 1/2 y
And then to get y by itself, you must multiply both sides by 2
2x - 10 • 2 = y
Getting the equation
2x- 20 = y
Answer:
Step-by-step explanation:
281-28.5=252.5
252.5 divided by 0.4=631.25
X=631.25
Answer:
A stem and leaf plot shouldn't be used because the numbers are more than two digits long. These numbers are more varied, so it isn't correct for a stem and leaf plot. The stem is usually the tens digit, and the leaf is the ones digit. When you have four digits, it would get infinite times more hard and complicated. Hope that helped!