a) consider the first song played . The probability of its being liked is 4/9.
And for second song, we have 3 liked songs and 8 remaining songs.
Hence probability of second being liked is 3/8.
Overall probability = (4/9)*(3/8) = 1/6 = 0.167 hence it is almost unusual.
b) First song being not liked is 5/9.
And for second song being not liked is 4/8.
Hence overall probability = (5/9)*(4/8) = 5/18.
c) To like exactly one of them, it has 2 possibilities. First song may be liked and second song disliked = (4/9)*(5/8) = (5/18)
First song may be disliked and second song liked = (5/9)*(4/8) = (5/18)
Hence overall probability = (5/18)+(5/18) = 5/9
d) a)Probability of 2 songs liked by me with replacement means in both cases i have to select a song from 4 liked songs.
Hence probability = (4/9)*(4/9) = 16/81
b) probability of both being not liked by me is = (5/9)*(5/9) = (25/81)
c) probability of exactly one being liked = (4/9)*(5/9)+(5/9)*(4/9) = 40/81
Answer:
A = [- 2Bl + U^2 +/- √((2BL - U^2)^2 - 4B^2L^2) ] / 2L
Step-by-step explanation:
L = U^2A / (A + B)^2
U^2 A = L(A^2 + 2AB + B^2)
U^2 A = LA^2 + 2ABL + B^2L
LA^2 + 2ABL - U^2A + B^2 L = 0
LA^2 + (2BL - U^2)A + B^2L = 0
Using the quadratic formula
A = [- (2BL - U^2) +/- √[(2BL - U^2)^2 - 4*L*B^2L] / 2L
A = [- 2BL + U^2 +/- √[(2BL - U^2)^2 - 4B^2L^2) ] / 2L
The original price would have been 60 dollars because 25%of 60 is 20 so take twenty from sixty and you get forty
Answer:
NOT nets = A, C, D, F
Nets = B, E, G, H
Figure B (Triangular prism)
SA: 3 rectangles + 2 triangles
Rectangles: (20·8) + (20·10) + (20·6) = 480 ft²
Triangles: (8·6)/2 + (8·6)/2 = 48 ft²
Total SA: 528 ft²
Figure E (Square pyramid)
SA: 1 square + 4 triangles
Square: 10·10 = 100 yd²
Triangles: (12·10)/2 + (12·10)/2 + (12·10)/2 + (12·10)/2 = 240 yd²
Total SA: 340 yd²
Figure G (Rectangular prism)
SA = 2 wide rectangles + 4 narrow rectangles
Wide: (7·11) + (7·11) = 154 cm²
Narrow: (2·7) + (2·7) + (11·3) + (11·3) = 94 cm²
Total SA: 248 cm²
Figure H (Cube)
SA = 6 squares
Squares: 6 x (1·1) = 6 m²
Total SA: 6 m²
I hope this helps and God bless!
Step-by-step explanation:
answers in 4 y z missing ......
from my side
