Answer:
[tex]t=5[/tex]
Step-by-step explanation:
So we know that:
[tex]h(t)=-4t+40[/tex]
And we want to figure out t such that h(t)=20.
So, substitute 20 for h(t):
[tex]20=-4t+40[/tex]
Now, solve for t. Subtract 40 from both sides:
[tex]-20=-4t[/tex]
Divide both sides by -4:
[tex]t=5[/tex]
And we're done!
Answer:
t = 5
Step-by-step explanation:
If h(t) is = to -4t + 40 and is = to 20, then you can set these two equations equal to each other
So now we are here:
20 = -4t + 40
-20 = -4t Subtract 40 from both sides of the equation
5 = t Divide -4 from both sides of the equation
