Answer:
(x+6)(x−6)=0
x=-6 or x=6
Step-by-step explanation:
X^2 - 36 = 0
Solve by Square Root
add 36 both sides
x^2−36+36=0+36
x^2=36
square root
x=±√36
x=6 or x=−6
You can do that or for 2nd option
Solve by factoring
x^2-36=0
(x+6)(x−6)=0
Set factors equal to 0
x+6=0 or x−6=0
x=-6 or x=6
PLEASE NOTE: 36 is the square of 6
and
x2 is the square of x1
Answer:
13818
I think that is your answer
Answer:
I think the answer is C
Step-by-step explanation:
Answer:
a) it takes 4 seconds for the ball to hit the ground
b) 480 ft
c) 64 ft
Step-by-step explanation:
The parametric equation is
x(t) = 120t and y = 64t - 16t²
a) To find when the ball hits the ground, we use the y equation. The ball hits the ground at y = 0. Therefore:

t = 4 seconds,
Therefore, it takes 4 seconds for the ball to hit the ground
b) Since it takes 4 seconds for the ball to hit the ground, to find how far the ball would travel, we substitute t = 4 into x = 120t. Therefore:
x = 120(4) = 480
x = 480 ft
a) The maximum height of the ball is the vertex of the y equation.
The vertex occurs at t = 
Substituting t = 2 in the y equation:
y = 64(2) - 16(2)² = 128 - 64 = 64 ft
y = 64 ft