Answer:
The answer is D.
Step-by-step explanation:
We have to apply Discriminant Law. When a quadratic equation, ax² + bx + c = 0 has equal roots so the discriminant will be 0. Then, you have to substitute the values into the formula :








Answer:
c) 10 feet
Step-by-step explanation:
Pythagorean theorum! Wonderful! (remember that c is the hypotenuse)
a^2 + b^2 = c^2
8^2 + 6^2 = c^2
64 + 36 = c^2
100 = c^2
square root of 100 = c^2
10 = c^2
ANSWER
The value of x is

EXPLANATION
We want to solve the equation,

The first step is to add 4 to both sides of the equation to obtain,

We simplify the right hand side to obtain,

We now square both sides of the equation to obtain,

This simplifies to

We solve for x to obtain,

This implies that,
It is reflecting across the x-axis