2(x + 4) = 4x + 3 – 2x + 5

x = infinite amount of solutions

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Algebra I

Step-by-step explanation:

Step 1: Define Equation

2(x + 4) = 4x + 3 - 2x + 5

Step 2: Solve for x

Here we see that x does indeed equal x.

∴ x = infinite amount of solutions

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

1760 kilometers

step-by-step explanation:

multiply the amount of time the plane took to travel by it's speed