I=PRT/100
720=1000x9xT/100
72000=9000T
T=72000/9000
T=8years
It may be that he chose from a side, so maybe there were more girls than boys on the left side, the side he chose from.
Answer:
-3.4(2.7a-1.7)-1.2a= 47.3
A = -4
Answer:
(2,1)
Step-by-step explanation:
3x+y = 7
-2x +y = -3
Solve the second equation for y by adding 2x to each side
-2x+2x +y = -3+2x
y = -3 +2x
Substitute into the first equation
3x+ (-3+2x) = 7
Combine like terms
5x -3 = 7
Add 3 to each side
5x-3+3 = 7+3
5x = 10
Divide by 5
5x/5 = 10/5
x=2
Now we need to solve for y
y = -3 +2x
y = -3 +2(2)
y = -3+4
y =1