Answer:
Approximately 2 weeks
Step-by-step explanation:
Given data
Cost of bike= £250
<em>Assuming she works for 6 days</em>
1.Babysitting
6*2.75=£16.5 per day
for 6 days
=16.5*6
=£99
2. Saturday Job
=£27.50
Total earnings for the week
=£27.50+£99
=£126.5 weekly
Hence it will take her
=250/126.5
=1.97 week
Approximately 2 weeks to save up the amount
Answer:
I think it is -5+root-7/2 & -5-root-7/2
Step-by-step explanation:
Answer:
The expected number of wins for the player is 2.31
Step-by-step explanation:
No. of face cards = 12
total cards = 52
Probability of getting face card = 
Probability of getting face card = 
The player plays 10 times
Formula : 
n = no. of trials = 10
p = probability of success= 
E=expected number of wins


So, the expected number of wins for the player is 2.31
<span>P - 3 1/6 = -2 1/2
3 1/6- 21/2
p=2/3 </span>