Correct option:
d. 1.64
<h2>
Explanation:</h2>
An object is launched vertically upward from a 25 foot platform and is modeled by the following function:
So this is the equation of a parabola because the object is a projectile so it follows the Projectile Motion.
The object fall back to the ground when 
so:
Since time can't be negative, we only choose the positive value. therefore:
<em>The object fall back to the ground after 1.64 seconds</em>
<em></em>
<h2>
Learn more:</h2>
Projectile motion: brainly.com/question/12554459
#LearnWithbrainly
Answer:
x =4 ,y =4 and z =0 is the solution.
Step-by-step explanation:
We shall solve the equations using elimination method
In equation 2 and 3 we can see that coefficient of z in both equations are same with opposite sides , adding equations (2) and (3)
3y+5z = 12
y -5z = 4 adding the equations
___________
4y = 16
dividing both sides by 4
y =
y = 4
Plugging the value of y in equation 2 or equation 3 ,we get
3(4) +5z = 12
12+5z = 12
5z = 12-12 or 5z =0 gives z =0
plugging y =4 and z =0 in equation 1
2x+3(4)+ 0 = 20
2x+12 = 20
2x =20-12
2x = 8
x = 8 divided by 2 gives
x =4
therefore solution of the system is given by
x=4 , y =4 and z =0
Answer:
This question is incomplete. What exactly are we doing to the equation
PS; You can answer in the comment section. I'd help out there
I think you forgot to add the attachment.
Answer:
True
Step-by-step explanation:
