<span>Simplify 8 - {x - (5 + x)}:
Order of operations rules require that you perform work inside parentheses first. Thus, do this first: </span>x - (5 + x) => x - 5 - x => -5.
Now we have the following: 8 - {-5} => 8+5 = 13 (answer)
Please note: To avoid confusion, please separate answer choices, such as <span>3 13 -2x + 3 -2x + 13, by using commas or by putting each choice on its own new line:
</span><span>3
13
-2x + 13
I was and still am unsure of what you meant here.</span>
Answer:
55
Step-by-step explanation:
if it cost 2,145 for the whole thing and 39 for each person 2,145 divide by 39= 55
Answer:
D: 450 miles
Step-by-step explanation:
So we know that Officer Jacobi drove 180 miles, which represents 40% of the total distance driven. In other words, 40% of the total distance traveled is 180. Thus (let <em>D</em> be the total distance traveled):

This equation is basically saying that 40% (0.4) of the total distance driven is 180 miles. To solve for the total distance <em>D</em>, we can divide both sides by 0.4. Thus:

So the answer is D or 450 miles.
Note that there isn't a specific formula you would use. These types of problems require you to write out an equation yourself.
5(10x-10) = -5(-4x+4)
50x-50 = 20x-20
50x-20x = -20+50
30x = 30
x = 1
Answer:
ax2 + bx + c = 0.
Step-by-step explanation:
The roots of a function are the x-intercepts. By definition, the y-coordinate of points lying on the x-axis is zero.
Therefore, to find the roots of a quadratic function, we set f (x) = 0, and solve the equation, ax2 + bx + c = 0.