Answer:
A
B
-
4
x
+
9
B
C
=
5
x
+
2
=
A
=
9
x/
B
+
2/
B
−
9
C
A
C
−
56
=
A
=
9
x
/B
+
2/
B
−
9
C
x=A=9x/B+2x/B-9C
I hope this helps
Answer:
10.06 ft
Step-by-step explanation:
Maria's maximum height will occur when her velocity reaches zero (0). This means that she has stopped ascending and is about to begin descent.
The equation for the height reached by Maria on the trampoline is given as:
![h=-16t^2+18t+5](https://tex.z-dn.net/?f=h%3D-16t%5E2%2B18t%2B5)
To find her maximum height, we first have to find the time it will take her to get to that height and corresponding velocity (zero).
Her velocity can be found by differentiating her height i.e. dh/dt:
![v = \frac{dh}{dt} = -32t + 18](https://tex.z-dn.net/?f=v%20%3D%20%5Cfrac%7Bdh%7D%7Bdt%7D%20%3D%20-32t%20%2B%2018)
Therefore, when v = 0:
![0 = -32t+ 18\\\\=> 32t= 18\\\\t = 18 / 32 = 0.5625 secs](https://tex.z-dn.net/?f=0%20%3D%20-32t%2B%2018%5C%5C%5C%5C%3D%3E%2032t%3D%2018%5C%5C%5C%5Ct%20%3D%2018%20%2F%2032%20%3D%200.5625%20secs)
It takes her 0.5625 seconds to get to her maximum height.
Therefore, her height at that time (0.5625 seconds) is:
![h=-16(0.5625)^2+18(0.5625)+5\\\\h = -16 * (0.3164) + 10.125+5\\\\h = -5.0624 + 15.125\\\\h = 10.06 ft](https://tex.z-dn.net/?f=h%3D-16%280.5625%29%5E2%2B18%280.5625%29%2B5%5C%5C%5C%5Ch%20%3D%20-16%20%2A%20%280.3164%29%20%2B%2010.125%2B5%5C%5C%5C%5Ch%20%3D%20-5.0624%20%2B%2015.125%5C%5C%5C%5Ch%20%3D%2010.06%20ft)
Therefore, her maximum height is 10.06 ft.
24 : 12.5/100 = 24 * 100/12.5 = 192;
You need to figure out how many square feet one paint can will be able to paint, then take the 24 square feet and divide it by the how much the paint can can paint, then you’ll have how many paint cans you need