Expand the left side
2x(x + 5) - 1(x + 5) = 2x² - mx - 5
2x² + 10x - x - 5 = 2x² - mx - 5
2x² + 9x - 5 = 2x² - mx - 5
cancel 2x² and -5
9x = - mx
m = -9
sorry i was wrong, my mistake hehe
<h3>
Answer: Choice C) -1</h3>
This is where the diagonal line crosses the vertical y axis.
The y intercept always occurs when x = 0. The location of the y intercept in (x,y) form is (0,-1)
<span>A rational number is a number that can be written as a ratio</span>
<em>5) x = 8</em>
<em>6) z = 49°</em>
- <em>Step-by-step explanation:</em>
<em>Hi there ! </em>
<em>5)</em>
<em>we have opposite angles =></em>
<em>5x = 2x + 24</em>
<em>5x - 2x = 24</em>
<em>3x = 24</em>
<em>x = 24 : 3</em>
<em>x = 8</em>
<em>6) </em>
<em><u>The sum of the three interior angles in a triangle is always 180° !</u></em>
<em>x = 180° - (28° + 39°)</em>
<em>= 180° - 67°</em>
<em>= 113°</em>
<em />
<em>x ; y = supplementary angles => </em>
<em>x + y = 180° => </em>
<em>y = 180° - x</em>
<em>= 180° - 113°</em>
<em>= 67°</em>
<em />
<em>z = 180° - (64° + 67°)</em>
<em>= 180° - 131°</em>
<em>= 49°</em>
<em />
<em>Good luck !</em>
<em />
Answer: 9+23p ≤ 170
Step-by-step explanation:
9+23p≤170
23p ≤ 170-9
23p ≤ 161/23
p≤7
