Answer:
0.643
Step-by-step explanation:
Let, s = play a sport
c = participate in a club
P(s) = 0.14
P(s n c) = 0.09
probability that a student participates in
a club given that they also play a sport = P(c | s)
P(c | s) = P(c n s) / P(s)
P(c | s) = 0.09 / 0.14
P(c | s) = 0.64285
= 0.643
Let pages written by Tom for a school report = x
Pages written by Jen for school report= 10 x
Pages written by Tom + Pages written by Jen = 396
→ x + 10 x = 396
→ 11 x =396
Dividing both sides by 11, we get
→ x =36,
Pages wrote by Tom= 36 pages
Pages wrote by Jen = 36 × 10=360 pages
Subtract 27 and you can get a relationship between b and c. Without additional information, that's the best you can do.
3b +c = -43
Answer:
No solution
Step-by-step explanation:
(√(2x+3))^2 =(√(2x+33))^2
2x+3 = 2x+33
Answer:
61°C
Step-by-step explanation:
Newton's Law of cooling gives the temperature -time relationship has:
T (t) = 20 + 75 е⁻(t/50)-------------------------------------------------------- (1)
where Time is in minutes (min) & Temperature in degree Celsius (°C)
During the first half hour, t = 30 mins
Substituting into (1)
T = 20 + 75 е⁻(30/50)
= 20 + 75(0.5488)
= 20 + 41.16
= 61.16°C
≈ 61°C
