PLEASE HELP

Step-by-step explanation:

1. Simplifying

8x + 2y = 14

2. Solving

8x + 2y = 14

3. Solving for variable 'x'.

4. Move all terms containing x to the left, all other terms to the right.

Add '-2y' to each side of the equation.

8x + 2y + -2y = 14 + -2y

5. Combine like terms: 2y + -2y = 0

8x + 0 = 14 + -2y

8x = 14 + -2y

6. Divide each side by '8'.

x = 1.75 + -0.25y

7. Simplifying

x = 1.75 + -0.25y

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length