Answer:
d=-9
Step-by-step explanation:
you simplify both side of the equation
d/3-9=-12
1/3d+-9=-12
add 9 both sides
1/3d-9+9=-12+9
1/3d=-3
then you multiply 3 both sides
3 x (1/3d)=(3) x(-3)
d=-9
Hopes this helps :)
X² + 4x - 8 = 5
This is a simple quadratic equation. Let's move everything to the left side to start:
x² + 4x - 8 - 5 = 5 - 5
Now we have:
x² + 4x - 13 = 0
In a quadratic equation, x =
Therefore, we plug in a = 1, b = 4, and c = -13, and we find that x = -2 - sqrt{17} OR -2 + sqrt{17}.
Answer: The initial height of the ball is 12 feet.
Step-by-step explanation:
We have the function , which models the height (in feet) of the ball after seconds.
Then, as the height is in function of the time, we know that the ball is in the initial height when:
So, to find the initial height, you need to substitute into the function:
Therefore, the initial height of the ball is 12 feet.
Answer:
A = 100.48 cm^2
Step-by-step explanation:
A = (π * r^2) /2
A = (3.14 * 8^2) /2
= (3.14 * 64) /2
= 200.96 / 2
= 100.48 cm^2