Answer:
5.2seconds
Step-by-step explanation:
Fredrick threw a ball from the top of a building. The height of the ball, in feet, after it is thrown is modeled by the function
The modeled function is given as
h(t) = –16t^2 +64t + 100,
We can see this is a quadratic equation, we can solve using quadratic formula, Below
= -b±(√b^2 -4ac)/2a
Where
a=-16, b=64, c=100
FROM THE ATTACHMENT
We have too answers t= -1.20s and t=5.20s
Therefore,it take 5.20s for the ball to reach the ground (h=0). Because "t" cannot be negative here
CHECK THE ATTACHMENT FOR THE QUADRATIC SOLUTION
When you divide fractions with the same denominator, you can just use the numerators to solve.
2/1= 2
2/7 (divided by) 1/7= 2/7
It's a little bit confusing, but if you think about it, one group of 2/7 is 2/7.
I hope this helps!
~kaikers
Answer:
The answer is the option
Step-by-step explanation:
Let
x-------> the balance at the beginning of the month
y------> total amount in deposits this month
we know that
-----> equation A
------> equation B
Substitute
equation B in equation A

1/2 + 2/s + (3/4) = s
s -2/s -5/4 = 0
s^2 -2s -1.25 = 0
s1 = 2.5
s1 = -.5