Answer:
Probability of choosing first girl = 11/20
Next one would be 10/19
11/20 x 10/19 = 11/38
Probability = 11/38
Answer:
2nd option
Step-by-step explanation:
trinomial is 2x² + 10x -4 = 0
a = 2
b = 10
c = -4
(-b±√b²-4ac) / 2a
= [-10±√100-4(2)(-4)] / 2
= (-10±2
) / 4
= (-5+)/2, = (-5-)/2 (simplified)
Answer:
A = 54
Step-by-step explanation:
A = 6 s^2
Let s=3
A = 6 * 3^2
A = 6 * 9
A = 54
Answer:
Approximately 3 inches.
Step-by-step explanation:
The shorter diagonal will bisect the 102 degree angle. so we have a triangle with base angles of 51, vertex 180 - 102 = 78 degrees and base length 4 inches.
Applying the Sine Rule:
4 / sin 78 = x / sin 51 where x = the length of the side of the rhombus.
x = 4 * sin 51 / sin 78
= 3.17 inches.
Answer:
429 beats
Step-by-step explanation:
The number of beats is proportional to the time of the song.
Convert the time to seconds to avoid recurring decimals.
4 minutes 12 seconds = 4×60+12=252 seconds
3 minutes 54 seconds = 4×60−6=234
seconds
Set up a direct proportion using equivalent fractions:
x234=462/252
←beats/←seconds
x=234×462/252
x=429 beats
