Using S = ut + 1/2gt², from rest, u = 0
S = 1/2gt², g ≈ 9.8 m/s²
S = <span>1/2 *9.8*3²
</span>S = 0.5<span> *9.8*3*3
</span>
<span>S ≈ 44.1 m</span>
We look at the point that has not moved and another point (if neccecary)
the point that has not moved is on the axis of reflection
that pont is D
we see in my diagram that the only axis that that is on is x=0
the answer is B. x=0
To calculate expected value,
We can add up the probability of all possible events.
The 2 possible events are either winning $50 or losing the prize, which is $ - 50
Expected value =
50 x 40 % + (-50) x 60%
= $-10
So the answer is $-10
Answer:
below
Step-by-step explanation:
improper fraction: 14/5
as a decimal: 2.8
proper fraction: 2 4/5