Im sorry but don’t know look it up if you can?
Nearest tenth = 8.0
Nearest hundredth = 7.95
Nearest ones = 8
Answer:
Time taken for the ball to hit the ground back = 3.08 s
Step-by-step explanation:
h(t)= -16t² + 48t + 4
when will rhe object come back to hit rhe ground?
When the ball is at the level.of the ground, h(t) = 0.
0 = -16t² + 48t + 4
-16t² + 48t + 4 = 0
Solving the quadratic equation
t = 3.08 s or t = -0.08 s
Since the time cannot be negative,
Time taken for the ball to hit the ground back = 3.08 s
Hope this Helps!!!
Step-by-step explanation:
Answer: ![f'(-3)=538](https://tex.z-dn.net/?f=f%27%28-3%29%3D538)
Step by step:
To get the derivative you can either multiply out the product (which I did below), or apply the formula for the derivative of a product of two functions. Either way you will obtain the same result, of course.
![f(x) = (2x^2-7x)(-x^2-7)=-2 x^4 + 7 x^3 - 14 x^2 + 49 x\\f'(x) = -8x^3 +21x^2 - 28x +49\\f'(-3)=538](https://tex.z-dn.net/?f=f%28x%29%20%3D%20%282x%5E2-7x%29%28-x%5E2-7%29%3D-2%20x%5E4%20%2B%207%20x%5E3%20-%2014%20x%5E2%20%2B%2049%20x%5C%5Cf%27%28x%29%20%3D%20-8x%5E3%20%2B21x%5E2%20-%2028x%20%2B49%5C%5Cf%27%28-3%29%3D538)