Answer:
10.2cm
Step-by-step explanation:
Perimeter is the sum of the lengths of all sides.
1st side: 9cm
2nd side: 7.8cm
Perimeter: 27cm
Perimeter = 1st + 2nd +3rd side of a triangle
27cm = 9cm +7.8cm + 3rd side
3rd side = 27cm - 9cm -7.8cm
= 10.2cm
Answer:
![H=-(t-3)^2+13](https://tex.z-dn.net/?f=H%3D-%28t-3%29%5E2%2B13)
Step-by-step explanation:
The path covered by the volleyball will be a downward parabola with the vertex being the highest point of the ball.
A general form of a downward parabola is given as:
![y=-a(x-h)^2+k](https://tex.z-dn.net/?f=y%3D-a%28x-h%29%5E2%2Bk)
Where
is the vertex of the parabola and 'a' is a constant.
Now, let 'h' be the vertical height and 't' be the time taken.
So, the equation would be of the form:
![H=-a(t-h)^2+k](https://tex.z-dn.net/?f=H%3D-a%28t-h%29%5E2%2Bk)
Now, as per question:
h = 2 seconds, k = 13 feet.
![H=-a(t-3)^2+13](https://tex.z-dn.net/?f=H%3D-a%28t-3%29%5E2%2B13)
Now, taking a = 1. So, the formula that can be used is:
![H=-(t-3)^2+13](https://tex.z-dn.net/?f=H%3D-%28t-3%29%5E2%2B13)
There will 80 characters per each line hold. Hope it help!
I believe that it would be the first one. They are looking for the distance from the y-axis, so the x value doesnt matter. 6 is 6 units away from the y-axis, and -6 is also 6 units away from the y-axis. Hope I helped!
Answer: 11
Step-by-step explanation:
It is 11 because count from -6...
-6 = 0
-5 = 1
-4 = 2
-3 = 3
-2 = 4
-1 = 5
0 = 6
1 = 7
2 = 8
3 = 9
4 = 10
5 = 11
Hope this helpsand sorry if not