Answer:
Step-by-step explanation:
x + y = 7
-x + y = -5
2y = 2
y = 1
x + 1 = 7
x = 6
(6, 1)
Answer:
25.
Step-by-step explanation:
Probability 1st song is sung by female : 55/100 reduces to 11/20
probability 2nd song is sung by a male : 35/100 reduces to 7/20
probability 3rd song is instrumental : 10/100 reduces to 1/10
probability of all 3 events happening : 11/20 * 7/20 * 1/10 = 77/4000
Answer:
28
Step-by-step explanation:
2x + 3x + 40 =180
5x= 180 - 140
5x=140
x= 28
The population seems like a young age group.
