An explicit formula<span> designates the n</span>th<span> term of the </span>sequence<span>, as an expression of n (where n = the term's location). It defines the </span>sequence<span> as a </span>formula<span> in terms of n.</span>
Answer:
Time, t = 4.5 s
Step-by-step explanation:
The number of seconds t it takes the ball to hit the green can be represented by the equation :
![-16t^2 + 70t + 5 = -4](https://tex.z-dn.net/?f=-16t%5E2%20%2B%2070t%20%2B%205%20%3D%20-4)
It means that the initial velocity is 70 ft/s. The above equation becomes:
![-16t^2 + 70t + 9=0](https://tex.z-dn.net/?f=-16t%5E2%20%2B%2070t%20%2B%209%3D0)
It is required to find the time taken by the ball to land on the ground. It is a quadratic equation. The solution of quadratic equation is given by :
![t=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}\\\\t=\dfrac{-b+ \sqrt{b^2-4ac} }{2a},\dfrac{-b- \sqrt{b^2-4ac} }{2a}\\\\t=\dfrac{-70+ \sqrt{(70)^2-4\times (-16)(9)} }{2(-16)}, \dfrac{-70-\sqrt{(70)^{2}-4\times(-16)(9)}}{2(-16)}](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7B-b%5Cpm%20%5Csqrt%7Bb%5E2-4ac%7D%20%7D%7B2a%7D%5C%5C%5C%5Ct%3D%5Cdfrac%7B-b%2B%20%5Csqrt%7Bb%5E2-4ac%7D%20%7D%7B2a%7D%2C%5Cdfrac%7B-b-%20%5Csqrt%7Bb%5E2-4ac%7D%20%7D%7B2a%7D%5C%5C%5C%5Ct%3D%5Cdfrac%7B-70%2B%20%5Csqrt%7B%2870%29%5E2-4%5Ctimes%20%28-16%29%289%29%7D%20%7D%7B2%28-16%29%7D%2C%20%5Cdfrac%7B-70-%5Csqrt%7B%2870%29%5E%7B2%7D-4%5Ctimes%28-16%29%289%29%7D%7D%7B2%28-16%29%7D)
t = −0.125 and t = 4.5 s
Time cannot be negative. So, the time taken by the ball to land on the ground is 4.5 seconds.
Write it from least to greatest.
The median is the middle one.
If there are two middles then the median is the average of them.
85 i hope this helps you.
A cube is a number that can have another number be multiplied by itself three times to equal the cube. A cube root is the number that is multiplied by itself three times. Example: 8 is a cube because 2 x 2 x 2 = 8 and 2 is the cube root. I hope this helped :)