Answer:
The ball will take 4.05 seconds to hit the ground.
Step-by-step explanation:
we have
This is a quadratic equation (vertical parabola) open down
The vertex is a maximum
we know that
The ball hit the ground when h=0
Solve the quadratic equation
For h=0
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
so
substitute in the formula
---> the time cannot be a negative number
therefore
The ball will take 4.05 seconds to hit the ground.
"<span>9log9(4) = " What do you mean by this?</span>
Answer:
you bought 8 packs in total or four of each
Step-by-step explanation:
if you ad 6 and eight you get 14 and when you divide 52 by 14 you get four. to ensure your answer if you multiply 6 by 4 and 8 by 4 and add them together you will get 52
Answer:
-1/4
Step-by-step explanation:
-3/8 - 7/8= 4/8=1/2
Mean = (14 + 16 + 7 + 9 + 11 + 13 + 8 + 10) ÷ 8 = 11
Variance =
[ (14-11)²+(16-11)²+(7-11)²+(9-11)²+(11-11)²+(13-11)²+(8-11)²+(10-11)² ]/7 = 9.71
Answer: 9.71
