The answer of this question is 4
Answer:
t = 1.5 seconds
Step-by-step explanation:
Given that d = −4t^2 + 2t + 6,
where d = distance above the water and
t = seconds.
Let assume that it's a perfect parabola
At the symmetry
t = -b/2a
Where a = -4, b = 2
t = -2/2(-4)
t = 1/4
To determine how long it will take a diver to reach the water’s surface
d = −4t^2 + 2t + 6
At water surface d =0
4t^2 - 2t - 6 = 0
Factorizing the above equation leads to
4t^2 + 4t - 6t - 6 = 0
4t(t + 1) -6(t + 1) = 0
4t - 6 =0
4t = 6
t = 6/4= 3/2 = 1.5 seconds
Since t can't be negative so we ignore the second factor.
Answer:
50.000
Step-by-step explanation:
the formula to get ther is the following:
X + ( X * 
* 4 ) = 50.650
X is the initial amount of money you need to find
4 are the years of interests
So, If you have interests, it means that some money will be added to yours. But how much?
The problem says that every year 0.325% of your initial amount will be added, so you will calculate that amount( X * ) and you multiply it by four.
All this added to your initial amount will be the final number you have 50.560
56.3 is your answer in simplest from
