Answer:
Step-by-step explanation:
it is exponential decay
f(x)=a(1/2)^x
where a is the original volume and x is the time in minutes.
A.
Number of marbles with 'B' written on them is [ n(A)] = 6.
Total number of marbles [ n(S)] = 15.
Thus, Probability is
P(A) = n(A) / n(S)
= 6/15 = 2/5. ⬅️
B.
Number of green marbles [ n(A)] = 5.
Total number of marbles [ n(S)] = 15.
Thus, Probability is
P(A) = n(A) / n(S)
= 5/15 = 1/3 ⬅️
Answer:
Part 1) The speed is
Part 2)
Step-by-step explanation:
Part 1
<em>What is this speed on feet per second?</em>
we know that
1 hour=60 min
1 min=60 sec
so
1 hour=60*60=3.600 sec
1 mi=5,280 ft
we have
Convert mi/h to ft/sec
Part 2
At this speed how many feet will the parachutists fall during 10 seconds on free fall?
Multiply the speed by the time to obtain the distance
so
1. Move the negative sign to the left.
- *-50
2. Use this rule: =
-
3. Simplify -
4. Move the negative sign to the left.
-(-950x/8)
5. Simplify 950x/8 to 475x/4
6. Remove parentheses.