A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th
1 answer:
Answer:
8.90 seconds
Step-by-step explanation:
When the rocket hits the ground, its height ( <em>y</em> ) will be zero. This means we can write the equation as:
- 0 = -16x²+129x+119
So we need to <u>solve that equation</u>:
- a = -16
- b = 129
- c = 119
- x =
x₁ = -0.84
x₂ = 8.90
We discard x₁, as it is negative.
So the answer is x₂, 8.90 seconds.
You might be interested in
Answer:
The amount of money due to Beth-Ann at the end of this period is $27, 300.
Step-by-step explanation:
The amount at the end of a period, when simple interest is being charged is:
Amount (A) = Principal (P) + Interest (I)
Here interest is computed using the formula:
It is provided that:
P = 24,000
R = 11%
T = 15 months = 1.25 years
Compute the Interest as follows:
The interest earned is, <em>I</em> = $3,300.
Compute the amount of money due to Beth-Ann at the end of this period as follows:
Thus, the amount of money due to Beth-Ann at the end of this period is $27, 300.
Answer:
and
Step-by-step explanation:
We have to solve the given equation - 2x² + 3x - 9 = 0
To solve the equation given above we have to factorize the left-hand side of the equation.
But it can not be factorized. So, use the Sridhar Achaya formula.
Therefore, and
So, and
{Where
}
Therefore, the solutions are imaginary numbers. (Answer)
Note: The Sridhar Acharya Formula gives if ax² + bx + c = 0, then the roots of the equation are and
.