Answer:
Step-by-step explanation:
a) the equation representing the parabola is expressed as
h = -16t² - 4t + 20
c) to determine the height after 25 seconds, we would substitute 25 for t into the given equation. It becomes
h = -16(25)² - 4(25) + 20
h = - 10000 - 100 + 20
h = - 10080
d) when the coin lands on the ground, the height would be 0. Therefore,
-16t² - 4t + 20 = 0
Dividing both sides of the equation by 4, it becomes
- 4t² - t + 5 = 0
- 4t² - 5t + 4t + 5 = 0
- t(4t + 5) + 1(4t + 5) = 0
- t + 1 = 0 or 4t + 5 = 0
t = 1 or t = - 5/4
Since t cannot be negative, then t = 1 second
Answer:
The answer is 15=15
Step-by-step explanation:
go to math
way, which is a website
and put your question in and the answer waill come to you!
Answer:
function gis defined as g (6) = - f (-4) graph
log(<em>x</em>) - log(6) = 2 log(4)
Condense the left side, using the property log(<em>a</em>) - log(<em>b</em>) = log(<em>a</em>/<em>b</em>) (if <em>b</em> ≠ 0):
log(<em>x</em> / 6) = 2 log(4)
Rewrite the right side, using the property <em>n</em> log(<em>a</em>) = log(<em>aⁿ </em>):
log(<em>x</em> / 6) = log(4²)
log(<em>x</em> / 6) = log(16)
Cancel the logarithms (i.e. take the exponential of both sides):
exp(log(<em>x </em>/ 6)) = exp(log(16))
<em>x</em> / 6 = 16
Solve for <em>x</em> :
<em>x</em> = 6 × 16
<em>x</em> = 96
