Idon’t understand any of this and really need it.

B) 3.2 mi

Step-by-step explanation:

1. The midpoints: midpoint formula = ((x₁ + x₂)/2, (y₁+ y₂)/2)

upper = ((6 + -4)/2, (8 + 0)/2) --> (1, 4)

lower = ((-8 + 2)/2, (3 + -5)/2) --> (-3, -1)

2. Distance: distance formula = √((x₁ - x₂)² + (y₁ - y₂)²)

√((1 + 3)² + (4 + 1)²) = √(16 + 25) = √41 ≈ 6.403... ≈ 6.4

3. Scale: 6.4 * 0.5 mi = 3.2 mi

d, x=8

step-by-step explanation:

simplifying

4x + -5 = 2x + 11

reorder the terms:

-5 + 4x = 2x + 11

reorder the terms:

-5 + 4x = 11 + 2x

solving

-5 + 4x = 11 + 2x

solving for variable 'x'.

move all terms containing x to the left, all other terms to the right.

add '-2x' to each side of the equation.

-5 + 4x + -2x = 11 + 2x + -2x

combine like terms: 4x + -2x = 2x

-5 + 2x = 11 + 2x + -2x

combine like terms: 2x + -2x = 0

-5 + 2x = 11 + 0

-5 + 2x = 11

add '5' to each side of the equation.

-5 + 5 + 2x = 11 + 5

combine like terms: -5 + 5 = 0

0 + 2x = 11 + 5

2x = 11 + 5

combine like terms: 11 + 5 = 16

2x = 16

divide each side by '2'.

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2