Answer:
Adults= 7
children= 9
Step-by-step explanation:
Step one:
given data
Adult tickets to a play cost $22. Tickets for children cost $15
let adult be x
and children be y
so
22x+15y= 228------1
x+y= 11----------------2
x= 11-y
Step two:
from 1
22(11-y)+15y= 228
242-22y+15y= 228
collect like terms
-7y= 228-242
7y= 14
divide both sides by 7
x= 2
from
x+y=11
y=11-2
y= 9
8000 girls
60
The perimeter is the measurement around an object.
So first you multiply the 20 and the 10 by 2.
20 * 2 = 40
10 * 2 = 20
Then, add then up!
40 + 20 = 60
(x - 4)(x - 6)
= x^2 - 6x - 4x + 24
= x^2 - 10x + 24