Answer:
what are you calculating here
Step-by-step explanation:
The answer should be 5.5
because 11 x 0.5 = 5.5 so 5.5 / 11 = 5.5
Answer:
so the probability of selected student is in the drama club is 1/5
Step-by-step explanation:
total students = 40
drama club= 8
art club= 12
we have to find probability of drama club
P (drama) = favorable outcome / total outcome
= 8 / 40
= 1/ 5
so the probability of selected student is in the drama club is 1/5
The last part is confusing but how I think it is is you multiply 32 by 2 and subtract 2
Answer:
180degrees
Step-by-step explanation:
Given the expression cos^2x - cos x - 2 = 0
Let P = cos x
P^2 - P - 2 = 0
Factorize
P^2 - 2P + P - 2 =0
P(P-2)+1(P-2) = 0
P-2 = 0 and P + 1 = 0
P = 2 and P = -1
Since P = cos x
cos x = -1
x = arccos(-1)
x = 180degrees
Hence the require angle is 180degrees
