Answer:
Will
Hope this helps you! Have a great day. :)
Answer:
Step-by-step explanation:
a)
The mean for ground floor is 20.67
The mean for balcony is 15.8
b)
the difference between the means is ground floor - balcony
20.67 - 15.8 = 4.87
You can talk about it yourself for part c
<< Add
to the left and right of the equation, multiple and make ''opposite multiplation'' to find x.
A)
25x.(-32)= (-16).5
-800x= -80
**to leave x alone and positive, you must divide to -800.
= INCORRECT
B)
C)
10x=1
D)
40x= 4
x=
= 1/10
I think there is a problem with the options :D
This is a quadratic equation whose graph is a parabola that opens down.
When does the rocket reach its highest point? Note that at that point it will stop ascending, momentarily stop, and then begin descending. Note also that that point is the vertex of the parabola.
The easiest way to find that time value is to use the formula t = -b/(2a).
Here, t at max height is t = -(144) / (2*[-16]) = 4.5 sec (answer.
What's the rocket's height there? To answer this, sub 4.5 sec for t in the given equation, <span>h(t) = -16t^2 + 144t.
Note: Please use " ^ " to indicate exponentiation:
</span> -16t^2 + 144t (not -16t2 + 144t)
