Answer:
5 cm
Step-by-step explanation:
Given a semicircle with perimeter 25.71 cm, we are required to find the radius of the circle.
Circumference of a Semicircle
=Length of the Circular part+Length of the diameter
The height of the ball according to the function h(t) is 16 feet after 1.92 seconds and after 0.46 seconds.
A function is defined as a expression containing one or more variables.
Technically speaking, a function is a means of linking a set of inputs to a set of outputs.
The height of the ball at any time t is given by the function:
Now the required height of the ball(in feet) is 16 feet. We have to find the value of t for which h(t)=16.
Let us substitute the values:
This is in the form of a quadratic equation in t.
Solving by using the quadratic formula:
We know that for a quadratic equation
Therefore for the above quadratic equation:
Therefore the ball reaches the height of 16 feet at times 1.92 seconds and at 0.46 seconds.
To learn more about functions:
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Answer: 7300
Step-by-step explanation: 5200 - 4000 = 1200. 1200 divided by four hours is 300. So 300 bacteria grow per hour. Then you multiply 300 by 11 hours and get 3300 bacteria plus the starting 4000 and your final number is 7300